The AI at large is a little strange right now. The Ottomans have a silly hard time coming around to destroying Byzantium. Muscovy gets thrashed by Novgorod. England isn't building ships post their initial stack. And yes, vassals - when not set to Supportive - are very willing to kamikaze anything that moves.
Oh, and for the first time in my 800+ hours of EU4 I've experienced being so powerful that nations, Outraged with over 100 AE against me, are too afraid to join a coalition against me.
Oh, and for the first time in my 800+ hours of EU4 I've experienced being so powerful that nations, Outraged with over 100 AE against me, are too afraid to join a coalition against me.