Looking at these models, I dunno what to say. They look pure amazing

The Orion looks, in a lot of ways, is better than the current HTL Orion (No offense to the HTL Orion's author) and would be very nice in-game. But UVMapping it? No sir, that would be a bad move! Do consider the countless mods that use Orions, as well as those that custom texture them. UVMapping it could be a disaster.
I'm having mixed reactions regarding the Deimos. I can't decide which is better nor I don't see it needing a UVMap. As for the Iceni though, well. One again, its hard to decide which is better, although I do think the X3 one's engine sections are more detailed, so I might favour that a bit more.
Edit:
Heck, there are Sins of a Solar Empire models there too! I dunno about you, but those models would be a great leap for anyone wanting to make a Sins of a Solar Empire mod for FS. Especially love the Trade Port.