I think there should be a fat revamp to the way war was waged in ck2. Like for exemple, adding the chevauchées would be key point in making war more interesting: siege vehicles could also be a thing (and I'm not talking about a set timer preventing your from assaulting a fort), although tricky to manage.
Obviously, there's the question of troop management, which even if we know that troop composition has been changed to an unknow degree (all we know is that we will have peasants, men-at-arms, and knights), we still don't know of the Ay fighting really works: I sincerely hope that it's not like in ck2 where fatter stacks almost always meant victory (against AI at least).
You guys got any more ideas?
Obviously, there's the question of troop management, which even if we know that troop composition has been changed to an unknow degree (all we know is that we will have peasants, men-at-arms, and knights), we still don't know of the Ay fighting really works: I sincerely hope that it's not like in ck2 where fatter stacks almost always meant victory (against AI at least).
You guys got any more ideas?