I'm probably too late in the party, but maybe something like a market or a jousting field (I'm pretty sure it's not the appropriate word thought ^^) can break the "too many churches" effect and balance it for something more secular ?
The border/corners inspirations you found are amazing (and I stole them for my own reference folder ). If I can say... As the both on the left side have a very similar structure, I would assume you already made your choice, even if you don't know it yet
Anyway, I'm amazed by your work and can't wait to see more !