This might be a use for all those black holes scattered around the galaxy. You could fly into one and pop out at another. And maybe you could use the big one at the core to jump between galaxies. Now, not just anyone could do this. It would require very specialized and expensive equipment, and maybe even a special class of ship. And to get this equipment, you would need the rank of Elite in exploration.
Or, with planetary landings coming, maybe we can discover some type of ancient alien artifacts, or stargates, scattered throughout the galaxy. These could even be newly discovered on planets or moons in known systems. Of course, these would have to be pretty big to allow ships, and especially capital ships, to pass through them. Now that, imho, would be pretty cool.
However they work, one thing is for sure - if they are located in controlled space, then the governments will be in control of them. They could limit who can use them and they charge fees. These would be known routes and would be reasonably safe. But I suppose you could also take your chances by trying out unexplored routes or discovering new stargates on unexplored planets. These would offer huge payouts but with very high risks.
I suppose another option would be to build our own system of jump gates, ala Babylon 5 style. That might not be so bad for jumping around controlled space, but how would you build a gate 40,000 LY away? That would take some serious time, credits, and effort. I think I'd rather rely on network of black holes or discovering ancient stargates.
Regardless of how it's done, and with a little more thought, I could see some very interesting game-play and interactions developing around these wormholes - add a little depth to the game. Anyway, I'd be curious about your thoughts and ideas. And I suppose this may not be an original idea, and may have already been discussed here or elsewhere, but it is a fresh thought for me, inspired by thousands of 32LY jumps to the core and back.
for game mechanics that's a good one.