Thanks @Roaring_Butterfly I will keep those suggestions in mind!

I see this less as a "forever" rig then as a mobile rig with a solid core to it. That is to say, I plan on keeping 80-90% of the design somewhat stable over time, and just subbing in/out a module when there's one I want to learn in depth. So yes, the OSC2 is not the permanent big OSC, and something more like C-sl may very well take its spot.

I should take a closer look at the mixer/VCA situation as you suggested. My intention with the mixers was to do some parallel voicing chains plus some panning for stereo. But maybe there's a more efficient setup to do that than the current above.

Thanks for the ideas & comments!