It would be cool to see how a planet has changed hands over the time it has been colonized. You can tell if it is a old planet or if it is a war zone. As an added feature, a player could add a in-character history log describing what happened during their rule over the planet. The things people would think up would add more background to the galaxy the pilots live in.
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I have suggested 7 Races, 5 Organizations, 3 locations, 3 materials, and 20 planets.
View my profile interests for a full list.