I think someone already mentioned this, but an option for it would save an awful lot of time. A lot of the levels are symmetrical, and on the big ones it takes ages to scroll over and try to remember just how you did it on the other side.
Hmmm, both valid ideas! But I'm still not sure that it would add to the game. Still feeling like it might take away. . .
Maybe just a mini-map? Frankly, I'd love to have that rather than spend forever scrolling. The level designer could of course designate which points it began and ended at, so you don't see the ENTIRE level.