Big fan of the Micrologue.
In the Filter Env section there’s pace for 1 knob.
If you add there the ability for Osc2 Pitch to be modulated by the Filter Envelope that opens up more sonic possibilities ( e.g. synth toms, picth brasses etc).
Many classic synths have this feature, would be a really nice addition for micrologue.
Btw micrologue is really an awesome analog synth. Alternatevely I’d gladly buy another “add on” if it was a Matrix section that would allow for cross modulation of oscillators, pitch to be modulated by enevelopes etc.
Just an idea
Ps: or you could just release Retrologue2 for Ipad!