In my opinion desaturated colors are nice.. especially that purple. But would be cool if you could customize a color for your faction with option to choose color, saturation etc.
Named space regions/features would be nice touch, but if it will be include, i hope they would be renamable.. or you can add option that players can name these space features themselves when they first discover them.
I hope space between stars is bigger for larger maps and loose clusters though. You know, space is vast and right now everything feels like next door.