The interesting thing about the TFA is the size. While it's conceivable to scrunch the face smaller, the proportions remind me of a Hasbro Voice Changer child-sized helmet.
I don't know if that was because JJ will shoot the painted scene of Kylo Ren (sheesh, all these new names to keep up with) holding the helmet up in the palm of his hand (that would have been some funeral fire to do that to such a hardcore alloy. Whereas the stormtrooper armor was made of Plasteel, Vader's armor was made of Durasteel. In a ROTS reference, Durasteel melts in lava, and depending on the lava, regular steel melts at around 2500°F, so a little funeral flame wouldn't really melt it that badly.
Okay, please don't hate me. I just realize I pointed out a hole in the story. :cheers
The only reason I'd make one is because of its resemblance to chocolate. But even if I asked bookface nicely to consider offer chocolate castings, I doubt any of you would eat it. :lol