actually, insofar as the audio side, that'd be my most frequent use as well...1 midi channel (say, for drums) going to a multi-output vi drum module. i'd want, say 16 separate pannable mono audio outputs (bouncing every time i tweak isn't really the ideal in this case).
it's great for roughing parts when you're not sure what's gonna change. the aux method works, but i hate hearing kick in the left, snare right, tom 1 left, 2 right, etc...
follow?