Nah people wouldn’t be happy with it…
I would like it, because it would explain how more Void Elves come into existence.
As of right now there’s a hole in the lore on how more Void Elves are supposed to be created. (Their creation was the result of a failed transformation ritual after all)
If they made “normal skinned” Void Elves, then it would be explain how more Void Elves come into being.
But yeh, people would hate it because the pro-Helfers wants, as you say, specifically the High Elves, i.e. the Silver Covenant High Elves.
I personally wouldn’t mind these being playable either, but I don’t care much either way.
I like the Void Elves well enough.
But to be fair I’ve seen quite a few Horde players ask for Eredar, which as you say makes no sense. They’re 100% demons.