RE jump tool: I would suggest using two different routes displayed, maybe two colors. One is least jumps, the other fuel saving option, that uses the non linear fuel consumption to give shorter but more jumps.
Other then that, very interesting visualization of the routes and systems.
Would you mind sharing your suggestions in the thread for the map? So we don't clutter this one with off-topic conversation, and to give some love to my thread as well
Currently it looks for routes with least number of refuels needed, and from those the one with the least number of jumps is displayed.
It was done for Beta 1, though, when I didn't consider the fuel saving option to be very useful (the first version had only that, because it was easier to implement). I wonder if you happen to be in a Viper or Cobra?
This may be certainly something I would consider doing next. Now I'm planning to improve search, to find commodities to buy/sell nearby, and maybe stations and ships for sale too.