Campaign idea!
For my next campaign, I will be playing Milan the way the game is intended. That is to say, I shall at all times be at war with all my neighbors, and I am not allowed to accept a ceasefire from anyone who declares on me from afar (say Spain to take the Mediterranean Isles or Egypt after a crusade)
Furthermore, given that Milan is meant to be played by spamming Genoese crossbow militia, all castles taken shall be promptly turned into cities. The AI may be getting the diplomacy right, but it does not understand building balanced armies and occasionally has mailed knights or similar heretical builds in their mix. I shall do a pure Milan run, and make the Sforza proud! (I forgot which family they have in the start if I am honest.)
It is unclear if I should be making alliances just to break them, or not having alliances at all. That will be played by ear unless the people speak below.
Wish me luck!