Everyone mentioned that fixing landscape around siege of castles is the thing we want on both sides. Move camps, disable auto-flips, make castle while it is held a real home base of the faction that is holding it.
#2 that I feel is good: look at corruptions. I have seen some racial or crass trait that adds +520 to the tactical mitigation. All corruptions need to be combed through with fine tooth comb to not let things like that fall through.
#3 minor. Allow defiler to res while in combat? Perhaps allowing it from the improved version of the skill?
********************-Rubbing my hands expectantly: make it my post that *will* be read!