All interesting theories...
However: I don't believe any of us will live to see any practical use made of them.
Every serious discussion I ever heard or read about the possibility of hyperspace travel always comes down to one main thing: We are easily decades, if not centuries, away from being able to generate the massive energies required to punch a hole in space-time, or even power the technologies capable of doing so.
Once humans have figured out how to efficently produce power on that scale, then we can really start to explore the practical uses of all these theories. But at the moment all the output of all the power plants on Earth don't generate nearly enough in an entire year that would be required in a single burst to bridge that gap.
Once we can harness the power of fusion, we might stand a chance.
Native XWA.Netter (Nutter?)