Nice to get more of the story to prepare for the next version.
As for how powerful Gallia is, there better be some weakness to them. 400+ battleships? Sounds like their region of space is empty when it comes to resources. Be nice if the trade routes backed that up.
Again, more plot holes than a machine gun can put in a barn, but this is a game and we do suspend thinking logically for many other things! So do so with the plot holes too!