After watching tons of gameplay videos and the AI battle royale, I was quite worried about the (in)aggressiveness of the AI, however after playing the game myself for days, I realised the AI is quite good, and the difficulty settings are much better balanced than the previous installments (especially thank you for cutting down annoying and unfair handicaps for the player at Deity). I totally agree with the early aggressiveness and more calmer, grounded wars in modern eras. However still I find the AI not declaring necessary wars due to the enormous late game warmongering penalties. Here I suggest a small addition that the allowance to combine different casus belli warmongering reductions if possible. I guess this will help the AI to start "necessary" wars in later eras and will be a decent addition. It is also realistic if you have more reasons to declare war to someone you declare more easier. What you guys think?