Kinda a dumb question, but I'm just curious as to why Great Plateau any% is a main category, and not a level run or something.

I mean GP is just the first huge task and not as strict as an IL also no IL takes 15 minutes(except HBC) and I think it is a very important category that doesnt need to hide

ILs mean they do not start from a new game; length has nothing to do with it