Got to thinking about some buildings that would be great in fallout 4.
Vampire bloodlines - Really just about any building from that game would be neat to have. Imagine visiting the Asylum night club and drinking some beer. Or a working sewer system that you can move around town in.
So what types of buildings do *you* want added?
edit: Also a comic-con style building. Not so much for the building, but as a place for modders do dump gear that wouldn't fit in a normal fallout setting. Imagine if the convention got nuked? Storm trooper armor, axes, swords.. all the weird fantasy stuff could show up there.
edit2: Cabin in the woods type building. A place that can spawn unique monsters. Imagine an ordinary looking cabin, where interacting with various objects might spawn unique monsters players have created.