The very first question you'll get with that take (over and over again) is "where is the just-as-prominent non-binary / gender-fluid HERO at this publisher?"
Which will be tons of fun to deal with, along with the inevitable and understandable accusations of bigotry.
Yeah, I'd rather not hit that button too hard. Or at all.
Hmmm ... I'd like Ultra to have a variant of Doctor Doom's "Ovoid mind transfer" technique: lock eyes with her victim and swap consciousnesses.