Creative Assembly Assembles Flaws
Creative Assembly claimed that diplomatic AI would be improved but it's still a wreck. About the only good thing about diplomatic AI is Papal faction interaction. Non-factive cities (called rebels) still cannot be traded with nor can they become subservient to a stronger faction as did happen in real history.
On the saddest note, everything fun and interesting about Medieval 1 has been discarded. Inquisitors are only responsive to Papal faction orders, spies can no longer help clean up weak links in ones own faction, and assaassins are almost useless.
While the game is still superior in basic gameplay features and more fun than real time strategy games, it plays as if redesigned by morons.