I like the idea of fewer jump points. In my current game, real stars, 177 systems surveyed, 18.6% have one jump point, 25.4% have two jump points, 22.6% have three jump points, 15.2% have four jump points, and 18% have greater than four jump points, (the maximum being 18!).
My only other comment is that if you start with multiple NPR empires on Earth then while you can usually beat them to the first ring out from Sol, the second and third are very difficult to get to first with the current fuel usage rules. But under the existing jump point generation rules they usually leave sufficient unexplored chains for you to go down. Once you reach fuel consumption 0.4 litre per engine power hour you are back to parity. The NPRs should have some restriction on fuel/range with a multiple Earth start.