After reading about a rotating galaxy, I was reminded of the starmap in Privateer 2. In order to navigate the galaxy, you were required to open a starmap, this starmap was a 3d pretty much cube. You could rotate the cube by holding down shift and click-dragging it. This could be an idea for rotating the starmap of Rebellion 2, especially if you made it 3d. Though, this would probably be pretty resource consuming and difficult, though if Privateer 2 could handle it, I don't see why not. It was a pretty simple image. That being said though, the starmap in that case consisted of very small stars and planets, in that format, they would not be able to show the resource/ship etc. information that you may want. But, I was just throwing an idea out there .