Would it be possible to split the main map into smaller submaps?
I don't think a patch for that has ever been made. It would be a quite challenging one to make, and even more to make user-friendly, since I doubt Lunar Magic would add support for it (or it would, who knows, it addded big levels support eventually, even though Alcaro had a patch for it years prior).
It's easily the best thing I've done
So why the empty numb?