(wow the topic suddenly flaired up)
I would have to say charging fee's for the use of gates is a good idea it could go to the respective law enforcement factions e.g. Bret armed forces an bret police (human factions) if connected in bret space.
Decreasing the lack of travelling through other systems an rp maybe there can be only 2 made 1 going bretonia space say new castle or leeds to california or texas. This whacks you in the middle of there territory but not the heart of. you could put some sort of locks with scanners at either end preventing unauthorised military ships and large fleets coming as a big surprise to the other respective houses having the locks to there end of the advanced jumpgate and a message being transmitted to the any military member of the house and incoming fleet compliment to decide to unlock the gate to the fleet. to prevent power traders you could have a limit to how many times a ship is able to use the gates in an hour or few as it would take a lot of energy. alternatively the same lock an key that prevents a major fleet passing through the gate could be implimented are a set number of pass throughs the gate locks to the specific ship an can only be unlocked by a respective house military officer .
If it doesnt work out nicely you could always have a set reaching from one far reaches of sirus
a middle system like magellen gallilao and then reach to another corner there end corners being some random uninteresting sector full of nebula it would take time to travel to anywere remotely useful an prevent power trading increase exploration rp, technology and history.
in testing you could set up a proto type ditching a ship one way over the other side of sirius or in a random sector. it could be built by ageira or there could even be a house technology race. There could be politics rp over this issue etc etc.