what I'd like is a programmable vector math unit with adjustable vector length so I can do massive compute operations without having to pay memory access latency cost. for instance, it would be awesome if CPU can just instruct to do alpha blend 2 frames command to the memory and avoid the whole fetch decode execute loop altogether.
On top of this it would be really awesome if this attached 'ram compute block' was re-programmable like fpgas or a simpler higher level construct. then we could essentially do all the 'parallel & dumb' computations in ram itself so CPU would mostly be for control and branch code.