Sure, throw in one x86 core, just to run geezer apps.
The current situation is that we run multiple applications on one core, which, so far, guarantees that somebody will find a way to hack it.
So don't do either. Run one app, driver, or file system per core. Run the OS, and nothing else, on one core, with absolute hardware protection. Power down the cores that have nothing to do.
Or else keep having viruses and trojans and timeouts and crashes forever.
John