I've already seen a lot of complaints about her outfit.My bet's on some sort of Mileena outrage due to her costume.
That and people fighting over how her mouth should look.
I'm inclined to agree with those complaints though. One of Mileena's main traits is to have a sexy outfit, but it seems even she isn't safe from desexualization. Maybe her alternate outfits will be better, but I have my doubts.