Not really talking bout core systems but rather the edge worlds, lets say corsairs's route from Gama to Dublin,they have 2 faster routes i believe with 4 jumps through holes each which is a prety long distance if you dont have a character stationed somewhere along the route,or Alpha to Gama,most raids use to start from those 2 home systems when the route was 3 jumps i think (theta-eta-alpha), but now its not worth the time to fly over for the same amount of time that will take the whole fight to end,let alone in the next mod when theres +1 system,its basicly ending a war.