I’m trying to think of the best way to do this to make it more controllable but not adding complexity.
Option 1: Width knob + Pan knob.
Option 2: Just 2 pan knobs, one for each voice. I can add a link button so that you can use them as a width knob as well the way it works in Panther. But then do I have to add separate volume controls for both? Or maybe just a mute button for each so you can do only 1 voice if you want.