Dan, the million dollar question though is (not really a question) that you actually PLAY tracks in. You do tracks layer after layer. For those of us without the skills, Reaper, Protools, Logic, Sonar... they just sit there waiting for manual input that won't be forthcoming. So that leads me to what IS a question. Where do you get your drums? Where do you get your bass? Your piano? Drums alone, to sit at a drum machine and program, would take me a week per song. Are you recording a real drummer with 8 mics to get your drums?
I guess what I am not following is the generic term "work flow". Where does your work flow begin, with nothing down or after something has generated tracks?
If it is the latter, then the reason I rarely leave RB is that once those tracks are there, I am pretty much done. I add VERY little to the program generated stuff, so little that it would take me longer to boot up another program, than just do the track into RB.
Then again, I do this in my spare time in my spare room, and you do it for a living.
This is a GREAT thread!!