One more feature suggestion (I suggested it earlier in some other thread, but since Ben seems to be reading this...):
Filter feedback. Everything coming out after the filters+amp would be fed back into the filter inputs (right after the oscillators). The amount of feedback would be controlled with a knob/parameter. This way you could create some really ballsy bass sounds and screaming leads with a much different character to other methods. This feature can be found from old analog HW synths, but not from many modern VA's.
