Honestly IMO DIVs feature of scaling the monsters to your level was the best innovation in the game. With these fixed levels it way too easy to outgrow them and then all you are left with is Pits. My idea is to introduce a potion like the Profane Mindcage (season 4). You could craft them up to whatever level you wish. While under the effect of this potion, all monsters will be at your chose level, loot drop will improve accordingly, and above a certain level NM Dungeon bosses can drop Mythics. This would allow us to just grind away throughout the game and still get level appropriate XP and loot, without being forced into mindlessly repetitive pit/boss runs. After a certain level the pits are the only real place to get XP and boss runs are a joke. I kill them before their spawn animation is even over. Just a thought.