Day/night might be a nice DLC. It's almost like another small game getting added on top of a huge one. Larian really needs to slow down XP progression if they add more things like that, though. It just isn't as fun when you max your Level. I think D&D Levels give you too much too fast; it would be nice if going up 11 Levels was instead going up 22 Levels with smaller incremental power creep and making it difficult to reach Level 23 without doing everything along the way to the finale.