Actually I think they could bring him back in a really cool way. Imagine that he was rescued from falling on Cruscant. Nursed back to health as the Jedi Order fell. Then went into hiding because of the recording at the Temple. BUT instead of just hiding like Obi-Wan or Yoda, became a bounty hunter with a cool disguise only to resurface after the Empire fell. He'd be old but would have a cool backstory.