IT might be nice to have one oscillator be monophonic and another polyphonic. maybe with multitimbrality via note filters to separate them. maybe the virtual keyboard could double as a visualizer for a “keyzone mode” that lights up a certain way when editing an oscillators keyzone. so instead of having one global polyphony setting, there’d be one kind of like the unison for every oscillator. and solve the voice stealing for monophony the normal way for oscs that have fewer voices than played notes.