Amazing effort you have put into this ! I especially agree with swapping positions of Nevyansk and Uthelaim castles regions, but i would prefer leaving space for Sargot`s rightfull position to the place where you put Car Banseth, and Car Banseth to remain where it is, or perhaps shuffle south Battania a bit so that it takes a bit of the county where Sargot is now (and hopefully won`t be for long, after moving north).
I like the idea of having Battanian cities in the center of it, when you enter their land, you first run into villages, then gradually castles and only then towns. I think that town proximity would help them survive for longer too.
In fact, i am so amazed by the effort (
Terco-quality), and many of the suggestions, that i`ve put it up in Top Curated , just for that little bit of extra visibility !