I had hoped to see a new ship style with earth's earlier models of spaceships, so you can see a difference between them and the current Alliance's ships as I doubt they have looked the same all these years.
Awesome DLC - thank you Stardock!
I too agree that at some point down the road there should be a different ship style for the new faction (perhaps Star Trek original series feel).
But ships aside, there should be a new logo right away. Even if the colors were inverted or something. The logo needs to be unique - otherwise it becomes much too confusing.
Edit: Silly me... It seems they do have their own logo. BEAUTIFUL!