provide separate volume and pan controller for the voice of a stave
in choir scores often 2 (or more) voices reside in a common stave. It would be great to allow separate volume and pan controls for the voices. Actually it is only possible to disable a voice completely in playback.
The practical benefit of this is following: in order to allow the members of a voice to train their voice, I provide playbacks where their voice is louder than the others. In V2 this forced me to create a separate score where the different voices are in different staves (so I have to maintain 2 scores for the same song). V3 would be perfect to solve the problem if it would provide separate controllers for the voices.