Also, change the background image of the galaxy so its NOT AT A BLOODY ANGLE! Its bloody annoying that that disk is at some odd angle when its the only visual reference for ship orientation when not looking at a station/planet.
Additionally, have an option somewhere that people can turn on for \"auto-level,\" which causes the ship to automatically roll such that it is \"right side up.\" This would only affect roles, and will not alter your pitch or direction. This will make it much easier to navigate both without a compass and with one (as it will prevent the compass from ending up being stuck in some inverted position after a few turns until you hit C to right yourself manually).
Lastly, one option could be to add fighter plane HUD-style attitude indicators, which would let you see both your \"pitch\" and your \"roll,\" making it easier to pay attention to which way you are facing. Combining this with a standard compass in the corner somewhere would allow a viewer total knowledge of their current heading without needing to rely on comparing their current sector number to the sector number currently in front of them.
In fact, with such a system you could just remove sectors as HUD targets, aside from using navigation to reach one. Which by the way should be improved so that you can fly diagonally right to the target at some point.