I would like a tool for making dungeons, added to the game. this way players dont have to get bent out of shape when they finish all developer made dungeons, and can keep themselves entertained with a list of player made dungeons to complete till the developers update more dungeons.
Dungeon maker should have a map design, so you can layout dungeon designs and rooms like a player housing tool, but for the dungeon map design.
Also Monster boss fights designs.