OS4 on a Custom Chipset Amiga please!
you already have it. And you had it for many, many years! They are called "dedicated processors" and they do 3d graphics (geforce, radeon) environmental sound (sb) etc. Before them, the cpu had to cope with everything. Sure, these chips don't have the commodore logo or the boing ball "slapped" on them (as you say ;-)) but still the whole concept is 100% Amiga influenced. :-)
