FPGA ftw! 
An x86 on a card running an emulated 68k that appears to the Amiga as a real 68k CPU is a fantasy I've often dreamed of too. Theoretically it would be faster than any current FPGA tech.
Ah we can but dream eh?
But in order to get some good speedy one, you usually have to have a rather large cooler.
But it could be nice in any case.
Personally, what I hope he will create next, is a new Zorro based graphics card, its crazy what 20+ years cards sells for.
