stellaris idea
Idk how to fix hyper relays but an idea I think I prefer is to add a starbase building that increases sublight speed in systems x jumps away, where x is the number of the building built (much like trade hubs)
If two starbases have overlapping range of increased speed area, ships can jump directly from one to the other. You could also model the planetary effects of hyper relays this way; any planets in affected systems get the benefit if there is a continuous path of affected systems to the capital
That way jumps are from the center of the system, avoiding a lot of awkwardness, they have broader usage than just developing specific systems with a construction ship, and their usage scales through the game along with starbase size