I know this is late, but I want to say it would be much more realistic to have a wiped out alien civilization over a living one. This is because humans have been around for a very very small fraction of the timeline of the universe. This means that if an alien civilization where to exist, it would very likely have exist and end before humans. I would want to see a storyline where the artifacts would lead you through the story of the end of this civilization, where they left the artifacts for any potential survivors to regain their technology while fighting through whatever the end is. And to make it more exciting, humanity would be in danger of the same threat and you and constellation would be on a quest to get the ancient technology to save humanity, except the end comes and you find out that their is no way to stop the end, and the technology unlocks the unity which is what saved the very few survivors of the old civilization which made them into Starborn. Sorry if this makes no sense at all.