OK... thought of something else...!

I'd like to see a stereo WIDTH parameter for all stereo sounds.

If you are performing on a large stage, and set up the speakers well apart, certain things like the Leslie FX, drum pannings and the like are WAY too wide. But you still want the overall ambience reverbs, choruses and such to have their full width. It would be nice to allow width control as a global offset for certain parameters.