One thing I find a little disappointing about the game is that basically every single Chappel and Castle in it is very similar to eachother.

Maybe back in the middle ages most castles and town chappels were similar in structure to castles and chappels in other towns. But given the fact that people didn't travel very far outside of their own home area I would doubt it.

If they created an entire world full of different landscape I don't see why they couldn't have just put in some structural variety amongst the different castles and chappels in towns. They have different furnishings from eachother but basically the structure of the buildings are about the same to one another.