Totally agree.
It's always confused me to hear the mix out of whack, turn down the track volume, but still hear the pad too loud.
I look at it from a consistency standpoint.
Why have channels with no corresponding tracks?
Well, I think I know the answer: then Presonus would have to have a new type of track that is only an Output track.
Doable, but more work than just exposing the channels as tracks.
(up-voted!)