https://www.cnet.com/news/mark-hamill-and-guardians-of-galaxy-3-director-james-gunn-talk/

Are the galaxies colliding? Over the weekend, a fan tweeted the suggestion that "Guardians of the Galaxy" director James Gunn add Mark Hamill to "Guardians of the Galaxy Vol. 3." Though no specific role or plot possibilities were discussed, by Monday, the lobbed proposal had turned from a casual idea to a mapped-out Malibu, California, meet-up.

Turns out Luke Skywalker and the director are neighbors, though in way more posh digs than Luke's old home on Tatooine.