Ugh... Did you have to use those awful Fox 'X-Men' films as examples of uniforms? To quote Scott: "Sorry, Logan. Superheroes wear costumes. And quite frankly, all the black leather is making people nervous". I'm tempted to disagree on principle...
...but instead I'll just disagree for the reasons most people above have done so. You don't solve objectification with - pardon the pun - uniformity. You address objectification (which is, as others have pointed out, not the same thing as fetishism by any means, although Spiridion clarifies that it also can be) by looking at men and women as individuals, with their own personality traits that may or may not be expressed through their apparel.
And, you look a character's given role, relative to the tone of the game/story. I think Dead Of Alive (which - case in point - seems to objectify and fetishize) is an increasingly creepy game series, yet its penchant for nurses outfits and bikinis kinda sorta fits the game's clearly Fruit Loops tone.
So regardless of whether it's a unique outfit or a uniform, whether it fits the role and the tone is the only thing that matters.
And now I'm going to wash my eyes - and my soul - of those Fox X-Men stills...