Would you play a game in the Diablo universe that was an mmo lite? It would be like Destiny or other games from the emerging Genre. Action combat. Third Person open world with more modern combat. Not hotkey based. Still the same old loot grind. Story. Online pvp, World populated with maybe a couple hundred players. Not a true mmo, but more of the new genre thats being created with the likes of Destiny and the Division.
Think the Witcher meets old Diablo meets destiny.