1. Fix Sieges and Combat. The AI is so bad with archers standing in blocks doing nothing. Infantry breaking outer gate and then doing nothing, and of course the clusterfrak at the base of ladders and towers instead of climbing. There needs to be a way to preposition troops, and move together holding formation. Cavalry misses to often, they can' hit fleeing enemies. Spacing needs to be better, infantry fights are dogpiles with no room to use weapons.
2. Smarter campaign AI. Fleeing parties run right by castles and towns instead of going in to safety, run into dead end traps, or turn around constantly instead of getting away. There in little strategic planning as armies march deep into enemy territory, raid a village as the are taking the town and lots of other useless actions.
3. Control over clan members and Lords. I would like to be able to tell my clan parties to defend an area, to raid or not and such things. I can't even suggest a party follow me to help an ally.