The process described in the TB book for creating a dungeon is sound, produces great dungeons I’m sure (didn’t have time to try), and probably way too much prep in my book regarding my resource allocation.
After initially being enchanted with the idea of running TB (it does a good job selling itself!) I actually realized I don’t even enjoy running Mouse Guard when I managed putting it to the test… So, not my cup of tea after some soul searching regarding what I actually personally enjoy instead of “drinking the kool aid”. (Which is true for any game, not just TB or MG.)
I can empathize with being overwhelmed with prep. You’re trying to do a great job there, Paul Beakley. Not just slapping something together but giving it an inner logic and some depth. It’s not always easy to find the time for that. I admit I often evolve these details during the game, then sit down and add them up and try to give them sense. My improv is better than my prep except when I’m laying down the broad strokes of a setting. Once I have those I just add details within. It saves a lot of work and just occasionally needs a bit of added effort to keep it consistent enough.