I'm wondering, have you ever had problems with changing the first supertemporary sketches (like temp perc/rhythm tracks) because you didn't redo them early enough, and now those first drafts (if played well) feel like an integral part of the composition that you can't really change?  If so, how have you solved this? I have some ideas, but would like more input.
i guess it depends if you like it. if you like it, you can keep it. if you don't like it, you can change it