Something that happens way way way too rarely in the studio system.

So, yes, DC would get positive PR, but it wouldn't be perceived as a PR move by the public, except by those who have a general mistrust at any opportunity given to a woman. No one thinks Wonder Woman is directed by a woman because of the PR-- they think they gave it to this female director because she can tell the story well.

I don't doubt Whedon's storytelling-- but when you factor in everything, I'm not sure why, if you're looking to expand your universe, you're not also looking for increased diversity in your voices with characters like this one (though maybe the fact that Suicide Squad robbed Ayer of his voice means I'm hoping for too much).