I was just watching the Star Trek: Animated Series and noted a lot of the ships that they used there were ships that probably wouldn't be too hard to add to the game. There are SO many ships in canon and in the Star Trek universe that we really shouldn't have to be limited to such a small selection. I think the USS Huron could be a Federation Carrier ship.
I think it would be kind of neat for some sort of generic alien ship being a crit reward for a VR T4 marauding chain.
You can use it or you can sell it. You can only get the ship reward once and there are 2 or 3 different ships possible. Have them based on generic-looking "alien" studio model ships. The final ship getting mission would require 10k dilth. Each ship would have 2-3 variant based on the different studio models.