+1. I don't recall the specifics, but if I recall correctly, I think that as the level of complexity increases, some limitations with using simple instrument tracks become more apparent. (again, this is dim recollection on my part, someone else can enlighten or advise on this).
What if you grouped some of the tracks into a track folder? Would that get them out of the way for you? I would think that you could lump all of the midi tracks into a track folder, then keep that folder collapsed once you are done with basic tracking for those.
Just a thought,
Bob Bone