treaties? no. because you have to have someone else take it to the other realm to sign, don't you? i think it's perfectly fine for co-operative stuff to require effort on the players' part, whilst having 1-sided stuff like war, etc to not require anyone else.
want allies to fight together? get a treaty signed. if your nobles can't be bothered? no treaties... good excuse for them to go and pick fight with everyone
The ruler could travel himself, you know?
And no, that's not a good excuse for them to pick a fight with everyone. They'll just stick to good ol' wiki treaties. If new treaties are too much hassle, people just won't bother adopting them.
