Since Stardock owns the Intellectual Property for Star Control, I want to make sure that Stardock wouldn't mind a mod based on Star Control in Galactic Civilizations 3.

Such issues have arisen in other game companies before, where their IP is used in another one of their games, but still sent a cease and desist letter to mod creators.

I have already started something.
https://github.com/Pendrokar/GalCiv3StarControl

But the assets I use are from the Ur-Quan Masters HD game project with whom I have contacted and got the green light to use their assets.