1) Is travel in hyperspace in straight lines only?
2) Can you change course while inside hyperspace?
3) Can ships inside hyperspace detect each other or see each other if sufficiently close?
4) Can ships inside hyperspace communicate with each other?
With people in real space?
5) Can a ship in real space detect a ship in hyperspace that flies by it?
6) If ships in hyperspace are very close, can they shoot at each other? Use tractor beams? Slice?
7) How long does it take to go from one edge of the galaxy to the opposite edge? Hours/Days/Weeks/Months/Years?
8) Can droids crawl around on the outside of a ship in hyperspace ala Phantom Menace? How about people?
9) Does gravity itself cause a ship to revert to real-space? Or can a ship actually crash into a planet?