An evolved retro synth? Sounds like a plan!
Seriously, if you look at the Evolver voice architecture there are a couple of things to improve on: All analog signal path where possible, better analog and digital oscillators, mixed in digital effects instead of AD/DA step, larger sequencer with slew/tie, better discrete filters, more modulation routings. Both Prophet 12 and Pro 2 are a step in the right direction but lacks IMHO at least analog oscillators and analog filter feedback. Prophet 12 would benefit from a modulation sequencer as well.
Oh the other hand the Evolver have this lovely digital dirt to its sound.
Anyway, the usual voice architecture rant! . o O ( what else is new )