Azuth being weakened or reincarnated to escape Hell would make much more sense and a better story than Gale just being a random archmage who fell from Mystra's favor and became level 1 again. Hell is clearly a player in BG3 already so that would tie in. Gale being Azuth would be similar to Solas in DA:I but it would be a cool story. Having read Azuth's story now makes Gale's story seem like a lazy copy anyway.
The wiki says Azuth was already separated from Asmodeus and is now a god again though. Maybe they retconned that or took it further. Would be really cool if they could make it work.
