Agraza
Registered Hutt
They should design buildings as if they're lived in, and used for something, and then design the player experience layered on top of that. They can still block access here or there with debris. So many little buildings in Fallout 3 were interesting as once functional, now a "level" experiences. I went through an old police precinct that had traps laid out and someone using a closet as a storage cache. You could see both levels of it being used. I'm frustrated by shit like Icecrown Citadel and whatever other dungeons, that basically just exist to be cleared. Kael Drakkel was good that way too, but Skyshrine and Thurgadin were pretty lame.