Hi Towelie,
They don't "stink" -- that is for sure. They are excellent. I like the modular way that you have made them, and the richness you achieved without being too expensive -- not too many blocks.
I have tried to think of how they might be improved. I think the area that is most in need of improvement is the ceiling. Fantasy castles (or real) don't use much of the flat ceilings. OK, yes, in upper rooms, you can assume a drop ceiling that is flat and decorated in various ways, if you like. And towers with curtain walls of stone and floors of wood can have flat ceilings all you want. Otherwise, I would look for vaulted or arched ceilings. Besides, the flat ceilings lack interest and variety. So, by all means, let some of your modular halls have flat ceilings if you wish, but you need other modules with vaults or arches.
Hope this helps. I like what I see, and can already visualize areas where I can use your work. Thanks for the contribution.
Best regards,