It would be the opposite of what a federation is supposed to be. And too easily gamed. No. There are reasons for the system being the way it is. Problems that lead to this request are because people made a federation they shouldn't have made in the first place.
I partially disagree, but I do concede that it would make the dissolving of federations a lot easier. The fear of automatically declaring war on a bunch of people is much greater than the fear of a bunch of people only needing to automatically declare war one 1 realm.
