Didn't I resolves this issue a while ago. Mace Windu is DEAD.
No, but seriously. I highly doubt Mace of all people will be coming back. Darth Maul's survival is plausible, he was chopped in half and received no other injuries, and was alive when he fell down the shute. And he didn't feel the impact, he grabbed onto an air vent and slid down a shute. (much like Luke did) People have survived those kind of injuries in the real world, so why not in Star Wars? (Especially seeing as Maul is strong in the dark side.) He also wasn't given much screen time and was something of a Boba Fett, didn't say much, but looked awesome anyway.
In terms of Mace Windu, he was was subject to the full power of Sidious' lighting. The most powerful Force lightning ever conceived. And was then shot out of a window and fell several thousand feet or more to the depths of Coruscant. Where his body was most likely collected or left to rot. Such a fall would have certainly killed him, he had nothing to grab onto and was probably dead or at least unconscious when he was rocket out of the window.
And if Windu had survived, he would have made an appearance in the Galactic Empire era, which lasted for about 20 years. Yet he didn't, and he didn't contact Yoda or Obi-Wan. Nor did he make any contact after the Empire fell and the New Republic was established. Basically Windu is dead.
EDIT: On the topic of Boba, his survival is plausible. Death by Sarlaac is a slow, slow death by digestion. Boba could have escaped before the digestible fluids cut through his beskar armour. Beskar being one of the most durable metals in the galaxy. And his death was kinda lame. I totally support his survival.
i cannot believe you just tried to convince us Darth Maul's end in Episode 1 was is less plausible than MAce Windu's..
cut in half vs one hand
both had what seemed a great distance to fall
neither had the fall shown
if you can pull MAul back from that sort of ending, you can upll Windu back.. powerful lightning or not the lightning didn't kill him it was the forch push typelightning, the previous ones were taken by his lightsaber.
some people just don't like certain character or want them back, that is acceptable, but then to come and make arguments trying to convince us that Mace's last scene looked more terminal than Maul is taking the miki. It isn't, you don't have to be a fantasy setting to write a comeback, many non fantasy films have had heroes and some villains come back from what would have seemed a far more convincing end than Mace,
when i first watched episode 3, and swa that scene, the first thing that came to my mind was that, oh not so bad, he can come back from this. - you see Qui'gon cannot come back, we saw his body burned and unlike Anakin, he wasn't made from the metachlorides, which is the only thing that can make an Anakin return plausible.
MAce may not come back, but a come back is certainly not as far-fetched as DArth Maul's was, and if MAul could come back, Windu certainly could.