If you are refering to mine, then I think I should clarify something about those arms. The top fins, the blue ones, are a rotating model. I'm currently playing with the rotation value to make it suitable. The lit area in the underside contains the fighterbays, and the lower three arms are docking arms. The station would be used as a colony station, thus the city inside. The rotating fins could be for industrial purposes, where increased gravity could have its uses, or as sensor panels, or just for looks. The rest of the hull, for the most part, would be used by civilians for living space, with the best real estate on the station would be around the inner wall, where the windows face in to the city, or in the towers within the dome. And a note on the dome; you can't fly inside the city because of a huge invisible face. You can shoot through it, but that can't be helped; it is supposed to be glass or something so that you can see within the city itself. The station is big (see the link in the first post for comparison pics) though I may scale it down a little bit, but for its purpose as a colony station it needs to be huge.