So, a random train of thought (hint if you haven't figured it out: breaks don't work) lead to an interesting idea, if possible.
In short: You can find human refugees, and splinter colonies of your own race. I always thought it would be interesting to find other races that might join you, but would join their main race if encountered.
I then thought that an interesting planetary special would be to find "failed" colony ships or stranded hibernation transports of other races, which you could then send to a colony and absorb some of that race. (Human refugees would fit very well here.)
That lead to the idea of a "hibernation ark". That lead to "what if it's NOT a known race?".
And so, again the short version (I had a much longer story idea), a pre Great War refugee race who emerged only to find a galaxy at war, and then immediately had to flee to the unknown, and things did not go well. Instead of finding a minor race living on a planet, you find a system with a colony ship and two or three cargo ships storing population units of a "lost race" that are "in hibernation". You take control of the ships, and then absorb them by either disembarking them into an existing colony, or colonizing a planet with the colony ship and disembarking the transports there. It would be a scenario similar to the Humans, but which went even more poorly.
So.
Would it be possible to have a system in the epic_systems file that is populated with occupied colony & cargo ships? If so, would it be a trouble to explain how?
Have I mentioned lately that the devs are really awesome people? </shameless_flattery>