Terrain editor, bots, flood-based stuff, all walls and blocks and stuff can either be clean, bloody, or have flood stuff on it, no salary cap, some sort of wiring so you can make doors open by activation a switch or something, auto-opening doors, all vehicles seen in-game (including ones that are not drivable, corpses, bot spawn areas (flood ones would be awesome), more variety in natural items (plants, trees, rocks, etc.), be able to decorate the interiors of rooms better and with more detail, multiple forge worlds, space ships (long swords and stuff), weather changing, snow, water, fire, be able to make tunnels and stuff like that (goes along with terrain editor), and being able to copy a whole structure.