I went with Garth of Izar. Although I could've gone with Other.
I imagine whoever Benedict Cumberbatch's playing will amount to a new creation. But they can probably use the Garth name for old canon recognition, and almost completely rewrite his past as they did to Kirk. There's probably more potential is improving a villain who wasn't all he could've been before. As apposed to rehashing a Khan or a Gary Mitchell, who are fan favourites and more risky to mess with.
I bet in earlier drafts they wanted Khan though, and couldn't make the villain's motivation work as well, as a bad apple who just came from within Starfleet to begin with.