The AI does need working. I like it when they denounce me for nothing or when they just declare a surprise war on me. I welcome a surprise war especially during domination so I can take all of their cities with light penalties xdDiplomacy for one is messed up, totally useless in my opinnion. Same goes with the AI attitude towards you, whatever you do, you'll always end up being a warmongerer even if someone else attacks you first, causing all to declare on you. Makes it a bit challenging I guess.