For fun, I've thought a bit about an follow up/replacement to the Prophet '08 and what features I'd like to see.
Here's some ideas I've had in my mind:
2 VCO's or DCO's - New DCO design, not the same synth on a chip. Offers Hard Sync
1 Sub oct - Was thinking of the Roland way, i.e. switchable -1 Oct Square, -2 Oct Square, and finally -2 Oct Pulse
1 Noise generator
The oscillators should have individual level controls into the filter with the ability to let them clip.
1 VCF based on the SSM2040 design used in the Pro-2 and Prophet-6, but with the addition of a 2 pole mode.
The 2 pole mode will still use the full 4 pole resonance feedback path (if the design permits it).
1 VCA with a built in overdrive that can be enabled via a switch.
3 EG's - Traditional ADSR. 3rd EG can be routed to OSC1 Freq, OSC2 Freq, OSC1 PW, and OSC2 PW.
2 LFO's - Because 2 are nicer than one. Targets individual OSC Freq and PW, as well as Filter Freq. LFO1 scaled by MW
ARP + SEQ - Same as in the Prophet-6 perhaps
61 Keys with velocity and aftertouch, and a module/desktop version.