I wish there was a mod that changed the cave dungeons in some quests to give them different layouts. Not massively different, and not much more difficult, but just enough to make you approach them differently on a new playthrough. I'm just tired of the tutorial caves in the early game, the narrow staircases in the Saarthal cave, the big potema cave... The issue for me isn't that they're repetitive and they blend together (even though an argument can be made for that), it's just that after 30-something new games, I'd like to play some new dungeons as part of the familiar quests.