Other than Lexi Alexander on the (dreadful) Punisher: War Zone, the superhero movie has more or less been the stomping ground of white male directors. While you'd hope that the studios would hire the best filmmaker for the given job, a little bit of diversity could go a long way in how characters are portrayed and being able to appeal to wider possible audiences.
Marvel almost had a female director on one of their films, but due to their various creative control issues, Patty Jenkins ended up walking away from Thor: The Dark World and we ended up with a film that absolutely could have used her deft touch.
Now that Warner Bros. is aiming to enter pre-production on Wonder Woman, slated for release in 2017, THR reports that they're currently looking to enlist a director with a double X chromosome.
There are no details beyond that brief mention, but it underlines one area where the studio is outmaneuvering Marvel, who is still unable to commit to a Black Widow or Captain Marvel-led film. For their part, Warner Bros DC Universe plans, which still seemingly a little "fly by night" until more details are revealed, are increasingly progressive in terms of the talent being recruited. Not only will their Wonder Woman be the first female-led superhero film in this current crop, but Cyborg, Aquaman, and Shazam will all feature non-white stars (Ray Fisher, Jason Momoa, and Dwayne Johnson respectively). Additionally, The Flash, starring Ezra Miller, will feature the first LGBTQ actor to headline a solo superhero film.
Now, it's time to take your guesses on who they could recruit for Diana's solo journey...Michelle MacLaren? Mimi Leder? Could Patty Jenkins give it another shot? There are tons of options out there, and knowing WB, they'll surely want someone with a strong authorial voice that knows how to manage a set. With production aimed to begin sometime in 2015, we'll probably have news on this item soon.