I think we should reconsider pushing for Gallia to win the war. It might be "more interesting" from a gameplay perspective but what do we define as more interesting? Or do we simply mean different?
The reason people don't like Gallia is because it's a mary-sue faction, when you consider it closely. It has no basis in lore, it's mere existence is a bit of a stretch. Then we consider their surprise entry into the Sirius system with an almighty armada that absolutely ruins everything. They have the numbers to just overwhelm. But their tech is also really good and so different from boring Sirian tech. They get total and devastating victory over any Sirian House they go to war with, and can even fight on multiple fronts at once. The only thing that can challenge Gallia is... Gallia. Yeah. Civil war now, I guess. But still fighting a war on two fronts, against Bretonia and Liberty.
And now we're suggesting that Gallia conquers Bretonia? What?
Fine, Gallia is a faction now and is here to stay as part of the story, but have we stopped trying to be objective here? Are we just going to conjure up a bottomless fleet for Gallia, with infinite resources and no lack of anything?
I didn't use the term mary-sue by accident. If Gallia was a character, she'd be the new girl in the neighborhood who is young and sweet but also very well known and a tough badass when she's angry. She's agile and small but also really strong and hits hard so she's able to fight like an underdog but still win. Her biggest flaws are that she's too nice so she holds back whenever she feels like she's winning too much -- and that she struggles with her dark side and preventing it from taking over.
If that sounds like a character from Twilight, then maybe we should look at the situation here.