What's stopping the empire from reaching Tanalor?
What's stopping the empire from building their own compass? In the flashbacks to Sanatari and Dagan. They didn't age much from the time they discovered Tanalor until they built the compasses. The research to build them likely took anywhere from fro 5 to 10 years. The Republic was able to accomplish that hundreds of years in the past. Surely the empire with more resources, more advanced tech, and a stronger reason can recreate its research. It would be a top priority when word reaches the emperor that the hidden path has created a safe haven for Jedi on a hidden planet. They could also put up a blockade stopping ships from coming and going. The point I’m making is that Tanalor doesn’t really solve much and isn’t as great as cal makes it sound.