Two of the most handy features of the editor are grouping objects and saving prefabs. A generic campsite with "campfire + 3 bedrolls + cooking pot" could be saved as prefab in Prepare Mode and would go a long way towards allowing GMs to quickly build levels.
Everything from demon-summoning shrines to dining tables to vendor stalls could be completed in an instant. And for those worried about everything looking the same: its much easier to tweak objects already on the map than it is to dig through the items list a half dozen times to get something you need.
