Yeah, it’s interesting that such a suit design was handy. I doubt a normal person with such injuries would be stuffed into a metal gargoyle helmet. I’ve always presumed it resembles ancient Sith armor.
I sort of wanted to see Anakin living a double life as a Jedi and as Palpatine’s secret henchman, (mirroring his own double life as Sidious) which would have required the Vader disguise long before he was injured.
I noticed recently Palpatine isn’t even trying to hide his face when communicating with the Trade Federation guys after his transformation. Not that Nute and the gang were even capable of connecting the dots. 😉