@geala - Improved AI has troops blocking better, but not super human. You can hit their heads... I tried RMB but must admit it was not my thing. Improved AI does not overpower the game, enemy & friendly troops are just that little better. Cavalry seem to realize they have a lance, although they still don't always use it. And in sieges the overall things I observe is that archers don't line up NEXT to barriers, but actually behind it, so they are no longer just sitting ducks. Troops wait until siege engines are in position (in stead of walking directly behind it and getting sniped), and attack quicker using the siege towers.