That's a seriously bad idea. Why put the computing inside the smallest, more constrained part when all you care about is carrying the state of your computer.

One nice feature of the NeXT cubes with the drives was that you could carry your environment on a disk and insert it on any NeXT machine to work from there. It failed because NeXT machines were never that mainstream and MO disks were slow as hell, but the core idea is that you saved your "world" to that disk, ejected it, went home, inserted it and continued to work.

I can do that with a USB stick and generic x86 computers.