Hi there! im new so sorry if already proposed: about castles i second the notable thing, plus i think a smithy will be nice expecially now with the 1.5.8 where it's not so easy to have a city as lordless or not ( rebellions very rare, taking a city even as a faction with big armies very difficult) and you will find yourself with a castle or two and the necessity to stay around to prevent the loss of it/them or heavy raiding of villages. Another issue i've found related to AI so i hope to be in topic is the Beglomuar basin (Battania territory) : if you set up a party with a clan member and you have Lageta this party will almost constantly patrol the basin letting your villagers easy prey of outlaws.