It would be nice if in Sector Space was not Blue (or red or whatever) and the stars looked like I was at warp with the stars stretching out longer the faster you are going.
I think the Sector Space, while I realize I am "at warp," does not make feel that I am "at warp." The stars going by do not give a sense of speed like the shows have had. The Blue overlay makes me feel like I am in a map, not in space.
I do not mind the Systems and Stations glowing blue, because that could be "Sensor Enhancement." Having a Station or System Fade into view as stars are racing by with trails behind them would add to the immersion that much of the game does succeed at.