I like everything about this art with the exception of the drive assemblies. Very... nontraditional. Beyond that, I like the lore and the art. The animations are fantastic, and I can't wait to see this come together into a functional mod.
Most important advice I can give, having played ~20 or so mod factions, is make sure each of your ships has some individual character, and some distinct disadvantages. Too many mods go for the "perfectly well rounded" ship approach, and it's flavorless and uninteresting. If your concept and balance talent is anything like your artistic talent, this will soon become one of the heavy hitters.