I shall expand a little bit more on the idea.
The evil bussiness "burk" who later dies in the sequels, sent the alien spaceship to the base.
The alien spaceship lands on the planet.
The explorers/colonists find the aliens around christmas time.
The humans/grown ups get whiped out by the aliens, the stand little chance, but the movie depicts some of it, in the flash backs of the children as they have nightmares at night, was it just a nightmare or was it reality ?!
Kids get confused now and then.
During the flashbacks the story is told of how the happy children in the base were getting ready to celebrite christmas and santa clause with their parents. Little kids still believe in Santa Clause and therefore they got more confused as something comes down the pipes, some of them actually believe it's Santa Clause and they start cheering ! While perhaps some grown ups start to feel unease... because secretly down inside, this is not normal, this was not planned.
Yes it's a very nasty present waiting for them coming down the pipes... A present they rather wish they would not have gotten for christmas.
And then the horror and slaughter unleashes... the parents get slaughter by the aliens, the blood flows richly... the aliens are very hungry... they haven't eaten in a while and most feed the gain in strength... they show now mercy for most of the humans.
Some get taken/pulled away for the immenint breeding. Again more presents for the children as they find their parents bursting an alien out of their chests ! Not one little tiny alien, but this time multiple parents, and multiple little aliens for increased horror effect.
The children fleeeeeww for the lives into the pipes... and the air ducts vents make small work of those little pesky aliens... and they little nails and fingers of the children are enough to kill a couple of these tinu little baby aliens.
Unfortunately it was not enough, some little alien bases get away, perhaps to rain terror on them later as they come back, perhaps slightly grown. Perhaps little baby alien xenomorphs/like little alien children running around and hunting the kids.
These little children xenomorphs are smaller and can walk/crouch run more easily through the pipes... where the children hide... The kids will have to defend themselfes with knifes.... perhaps later to find a flare gun in the cabinet of one of their parents quaters.
The kids come up with a plan to use gasoline to throw over the aliens as they walk through the pipes and some kids are on top of it and throw the gasoline down, and then other kids try to burn the aliens with simple firematches as they get up close...
and the flare gun is saved for the very big aliens if it ever comes to that. Yes these kids are quiter the fighters eventually, cause it must be an action movie (could also later be game ;) :)) However this is later in the movie, first they are full of fear, then they put up a fight... then many of them horribly die... the fire it goes wrong, they burn up themselfes, and they burn up half the place... they do take out a few aliens... and then the fear runs... the kids are no match for the aliens... and all they can do is hide and stay hidden...
This is were some fok up.... and only newt is smart and lucky enough to escape each time... newt can only watch as the others get taken... and she decides to run and save her own life... there is nothing she can do against the more powerfull aliens... she is too feared of dieing.
Later in the sequel she does get punished by god for this cowardlyness and gets impregnated by alien and dies during the crash on the prison planet. So god did have some mercy on her soul or so... she didnt suffer for too long... it was all inside her dream. This is how the movie could end... with a flash into the future mind of newt, as she spent her last seconds wondering what is happening to her in hypersleep. In her dream she kind knows that she is dieing in reality, but cannot wake up out of this nightmare and shall perish.
She feels the alien chestburster in her nightmare ripping through her skin... from the inside and outwards... camera flies through her body/vines and organs and holes and airwaves as if they total disappear flies through her body mounting into a FINAL SCREAM as she suddenly wakes UP !
Plus the chest burster hanging out of her delicious tittie body... and then BOOOM crash into the planet and a flash... and that's it... end of movie ! ;) :) The one thing she feared ultimately become reality. A nice good/bad ending for a nice in between movie ! ;) :)
A good end + a bad end ;) :) Yes she did escape the planet, but no she did not escape the alien threat and ultimately crashed landed into another planet... taking away the pain.
One kid in the movie should were some kind of cap... like an old fashioned cap out of the sixties or so... it was from his grand grand grand grand daddy or so... been in the family for many many many generations throughout time... only to fall to the prey of the aliens. Yes even caps are not safe for aliens, they snatch it of his head and at the same time decapitating half of his head. His brain exposed and bloody bits dripping onto the ground... other kids screaming in total fear and horror and madness, running away into all directions.
The aliens try to pursuit and cut them off, but the kids are very quick and manage to out smart and out run the aliens by making quick turns into all kinds of doorways and hatches. Slamming doors and auto-shutting hatches as they go.... sliding down waste disposal tubes and air vents.
Each kid comes to horrible death by it's own. One kid gets stuck onto one the air fans, and starts to spin around a little slow, slowwly, slowly, a little bit more... the alien is coming... and the alien looks amuzed at the kid stuck on the fan... he's like... hmmm that's an interesting meal... spinning on the fan... "how shall I put my big mouth onto him ?" The alien is not sure... he struggles a bit with this concept... his mind is thinking... I've never been in a situation like this before... Then the alien see s the power cord running through the fan... and he cuts the cord...
The kid is stupid enough to think... that the alien might actually not be so bad and is actually helping him trying to free him... and the kid looks puzzled at him... like why did you do that ?! And then he with his big white eyes looks up to the alien and HAP... the alien takes a bite out of his head... and now the kid knows... what the alien is all about... his face is gone and he drops onto the floor he goes into shock and shivvers on the floor... and the aliens ribs his body further apart so he can eat the internals of the kid more easily and drink it's blood.
Another kid is so much in panick he takes a very dangerous road through the base... the road which has holes in the floor... he figures he has not choice.. he must take a gamble onto that shakey floor... but it was a bad choice... the floor crumbles and gives way to his weight... he falls through one of the holes which was already weakened because of the acid slime that dripped onto it during the battle with the grown ups... perhaps another flash back... showing his this hole occured during the fight with the grown ups.
The irony is... it was actually his own father who died at that very same spot... and stabbed an alien with a huge knife... trying to kill it... but instead creating a big pool of acid over him and the floor... the body of the dad is long gone... taking and halfly eating by the aliens... perhaps as the kid falls the identified card of his farther falls into his hands.. and the kid realizes what happened her... he falls at the very same spot where his dad died... so sad.
The kid falls waaaaayyyy down into the lower levels of the base... where many aliens walk around... taking care of eggs, and food, and dead people stuck to the walls... and he is snatched by one of the face huggers... and he quickly gets grabbed by an alien with the facehugger still on it... and he has stuck against the wall... and her something new happens, here it is revealed how the aliens take a big shit on him... too cover him in gooey stuff. He might still be alive for now but his days are numbered... in a couple of days a chest burster will pop out of his hart area and then he will painfull die as well.
Another kid while trying to help another kid by throwing gasoline over the alien foks up and spils some gasoline on his legs and feet... and when the other kid lights the fire... the flame shoots up through the duct which sides were covered by the gasoline and the kid horribly catches fire... faster then he ever imagined... there was some kind of gasoline explosion which made the fire ball shoot up. He didnt see it on time.. because just at that very moment he heard something on his right side... and he looks... and he looks back.. and right then and there... the flame catches him... these very few seconds were very unlucky for him... so is life... he runs off into the distance... on fire trying to find water... never to be heard of again... what happened to this kid remains a mystery... or perhaps in his disappear he dives down the holes in the floor into the water/sewer system trying to put out the burning flames... only the drown... he wasn't a very good swimmer and his cloths were to heavy for him... and there was stuff in the sewer that made it hard to swim... maybe even metal debry/scrapnel/devices hanging on his legs... pulling him down.
I now have to take a piss.... and this is messing with my further ideas but ok, I have to cut it short:
Some weaker ideas:
The kids eat peanuts and anything else they can find ;) Maybe they even eat some flesh of the bones of the parents they found lieing dead here and there... not all corpses were taken by the aliens... not all bones are collected, some arms and legs get ripped off and provided some food for the kids.
There could also be a situation where the kids decide there is not enough food and one kid has to be sacrificed to make the aliens happy... and he gets pushed out of the hiding place... or even worse... he gets tied up... and left on the floor... for the aliens to find him... so that the kids believe that this will please the aliens some what and leave them alone...
Maybe they even drink their own piss ;) :)
Maybe they simply eat each other... or the one that gets sacrificed ;)
Or maybe they have a big argument... and big fight... pretty much about nothing... and they do something horrible... they luck one of the kids out or push him somewhere or tie him up out of revenge out of frustation because of their stituation. So kids also start to act like little monsters...
Another possible solution for the movie is that all kids are holy angels and are the somewhat weaker heroes trying to survive. Perhaps a bit of both... some kids are evil... and some kids are good.
Newt as intelligent as she is... also known as rebecca... knows this... she sees it in the eyes of the kids. But not all kids are as smart, not all kids notice it... and play along with the evil kids... newt knows that if she is too survive she must fend for herself and must get rids of all of these kids... she must turn into a lone ranger... never to be found by either the evil kids or the aliens... the base is big enough to do this... and so she does... she wanders off into the base... to find her ideal hiding spot.
The other kids go looking for her... out of curiosity sometimes... and during one of these scoutings they encounter aliens and they are caught and are taking down (not shown) but everybody knows what is going to happen to them.. they will be cocooned.
Sometimes at night when the airvents shutdown for a few minutes to prevent overheat the base is very quiet and she can hear the kids moan and cry... it's a chilling experience/night... but she is though... she bares it during the night... and hopes to get some shut eye... she is smart and puts little fluffy things from her doll into her ears so she doesnt have to hear the screaming and crying anymore... and thus she falls asleep and has some rest to go on...
Newt slowly progresses into a trauma... as if she cannot believe what is happening, the ear plugs offer some escapism to get away from it all. Her mind is confused... is this really happening... or is it one gigantic long dream/nightmare ?!
As she slowly wonders off into this trauma... the marines show up... and she doesnt believe it... she is so confused she runs... but the marines finally catch her ! And her nightmare is over for now... she is saved ! Linking up to the aliens sequal.
Her tear rolls over her eyes... that finally she sees some nice human beings... being kind to her... and taking her away from this horrible place... not to far... still in the base... but better... and she is taking care of...
Bye, Skybuck.