I for one if I had to pick something I know people will call me crazy I do wish they would design dungeons around the use of CC and incorporate mechanics like having a dps be forced to kite a group of mobs around or something. In short I wish dungeon design took job function and utility into question, even though this would push a meta comp I would be okay with that.
I get this is a bad idea and would suck but yeah I am weird like that.