I like that idea. For example, there could be gravitational pull towards high-G stellar objects like this one, and the closer you get, the more thrust you need to escape. The edge of the exclusion zone, instead of being a brick wall, could be a point of no return. And supercruise could be affected by gravity wells changing your trajectory, not only your speed. For a safe passage you'd have to navigate around objects instead of going in a straight line from A to B.
So do I, but it will never happen I am afraid, to many complaints from the unprepared beginning explorers, and just non-explorer players.