Originally posted by Diki:
That's true if you can't actually PLAY the tune, and have to sequence it entirely!
But all of those assignments are things that someone who actually plays might really need, were they to play the arranger... 
Yeah if you are going to play live and need all those control changes immediately you will indeed have some busy feet. I don't play live so for me it's easier to add some of them as controller events later exactly where I want them while correcting the rest of my flubs. Unlike yourself I do make mistakes and occasional clams.