I think overall its just a very interesting storyline that does remind me of WWII-ish themes of countries re-aligning to fight common enemies and overall just very cool.
Serious question however that Id actually like answered rather than ignored/flamed. If Liberty took the most prized area of Sirius space for themselves when they arrived first, how has Gallia been so successful that they are able to match all four of the other houses in manpower and fleet capacity? Do they have more systems in reality than we can see now or what? Did Liberty skip over what is now Gallia as it wasnt part of Sirius?