Nerf cavalry especially and charges in general.

This is really one of the biggest reasons why RTW was a disappointment to me. I liked the new campaign map but the tactical system lacked historical accuracy, game balance, strategy and tactics. It boiled down to circling around with cav, charge, disengage, circle around then charging again. Most battles are also over after the initial charge, even including infantry battles. For an infantry dominated era, cav and archers were the dominant forces in RTW. Cav is much more powerful during Medieval's era but they were never as powerful as they were in RTW. There were problems with AI and fast attack resolutions as well but I think the charges, especially cavalry charges ruined the tactical game for me.