Nothing I can think of right now. My biggest problem are the sieges, but I'll wait for complaints to come up.
Edit: I plan to create several siege versions for some of the scenes, once I have some feedback, if Tunsberg for example is going to be used for several places or as a unique scene. It takes quite some time to create a scene and I thought this would be a good idea to get more out of the scenes with little effort.
Another edit: Here is the download link for Tunsberg castle. The castle itself is somewhat empty and if someone wants to add a bit here and there, he/she is free to do so, but I don't know how well low-end machines will handle these changes. Finally, I got the siege working as intended and the AI in and out of itself is able to handle the siege. Placing a simple barrier at the connection between inner and outer wall will automatically make the siege harder, if need be.
The sourrounding terrain should be outer_terrain_plain, because it fits well for most part of the map. Close to the village the abrupt end of the river is weird, but most player won't notice, because they are either busy fending off the sally or are attacking themselves.
Some pics. I guess it would have been smart to take some screenshots during the siege tests, because there is more action in those moments. The newly created brick texture isn't a perfect fit for this castle, but way better than any native stuff.