+1 as a full time music teacher. This would help my students and allow quick access to drones without creating dedicated presets! Being able to pitch up the drone via an intervals knob that changes the note of the frozen drone – on the fly with an external footswitch or midi controller would be appreciated. Being able to improvise over this would be a blast.
I have a real soft spot for music education, and those working to save it from extinction. I modified a 3 year old Program that might fit your needs. Dual FREEZE, FLEX alternates, and plenty of ways to change intervals on-the-fly. All the details can be found in the Program Notes.
For what it’s worth, I’m also all-in on a dedicated SuperEgo-style algorithm. My ‘vision’ packs on diatonic arpeggios constrained to scale.
