Jackson has previously said he’s open to returning at Mace Windu, amusingly admitting that he would have to learn to use a lightsaber left-handed. However, McGregor is most likely correct to assume that Windu would be dead from such a high fall after suffering traumatic injuries. Even a Jedi Master would have trouble surviving such an attack.
Although, McGregor does not believe that Windu is still alive, he does admit that anything is possible within Star Wars. And as the franchise’s films and television shows have demonstrated, there is real possibility for any major death to be reversed. Besides Boba Fett’s most recent resurrection in The Mandalorian and The Book of Boba Fett, Darth Maul was cut in half by Obi-Wan Kenobi and dropped down a seemingly bottomless pit on the planet of Naboo in Star Wars: Episode I – The Phantom Menace. Yet, the Sith apprentice managed to survive and became a prominent figure in the popular Star Wars: The Clone Wars animated television series. More recently—and controversially—Palpatine was resurrected for Star Wars: The Rise of Skywalker following the Dark Lord’s presumed death in Star Wars: Return of the Jedi. Whether or not Mace Windu returns to the franchise remains to be seen, however, Star Wars has seemingly created a precedent that no one is ever really gone.