I like the artworks very much. They look awesome (except the Thoraxian one). But looking at some races from which we've only seen the ships so far, have you thought that they would look like this? The TLF races in SBR look really close to their TLF counterparts. Some minor differences are there because you see themnow more detailed. For example you see for the first time that peltians have six legs (who had thought?). And they are so cute with their big, black eyes and their snouts. I think they are my new favorite race.
The AI War races are very different from what I've immagined them. I excepted the Neinzul to be more insect like considering they are insects. But they look just... different. Different from anything every seen. Is this even a lifeform?
I was also surprised about the spire. Their sprites in AI War and SBR let them look like floating crystals and I always imagined them like that but now it seems they look more like shiny flying shells. Even with pearls in it. Interesting...
The Zenith however look actually jsut like you would imagine them. Bio-mechanial beings, nothing to say about that.