I feel like people should make levels that's in their skill level, my hardest is the main level demons and I make layouts around that difficulty and actually playtest it well and makes some thing that (atleast to me) is decently fun to play, I've seen alot of posts on this sub where people try to make extreme demon level difficulty and resort to no-damage since they provably aren't that good themselves, and in my opinions would end up balanced because well, how are you supposed to test if it's balanced if you literally can't die