You have the Order for the express purpose of hunting nomads, The Coalition in the grand scheme of things currently isn't really a threat to the rest of Sirius, and everyone and their dog shoots Gallia already.
The idea of bringing all of the houses together is kind of different, but totally impractical in theory. Even assuming you did succeed, the mod would suddenly become a lot less interesting because conflict = activity and the basis for roleplay. Having everyone just get along would only make things boring.
The "have them unite against Gallia/Coalition/Squids" sounds nice in theory, but in reality people don't like being vastly outnumbered and everybody also likes to play the good guy, so you'd see almost no players on their side, especially considering the fact that one of them is closed.
I do see what you're getting at and it isn't badly written, but it simply wouldn't work out.
Now, if you tried this on a smaller scale, maybe a group attempting to unify Hispania (something I've wanted to see for a long long time) and did it well, then that might be pretty interesting.
Thread moved to appropriate forum section as well.
