Cheers! Here are some comments:

• I consider replacingProcgen Mansion with Dwellings as a generator for "exploring" buildings (inMFCG andVG). But not until this one becomes more polished.
• Yeah, back doors are on my list.
• Currently the generator is trying to place as many bedrooms as there are floors. I don't think you need more than that, so I guess the problem is that often you get much fewer than that, am I right? In such cases you may try rerolling rooms by pressingCtrl+Enter.
• Inns are relatively easy. Temples are harder because usually they are expected to be symmetrical in plan and the current algorithm is not suitable for that. I'll think about it.