It's quite easy to throw 128k of sram on a chip and scream out one cycle/hash. You'd get an even bigger speedup over GPUs and CPUs than you get from Bitcoin.
Yes, wow, i didn't think it would be so easy to make one

Also, i realize some of the things i say are highly theoretical, but i'm just looking at all possibilities.
My main concern is the centralized distribution of ASIC's. I mean, i can walk down my street and pick up a GPU. Can that be done with an ASIC?
