I can't speak for everyone, but I would be satisfied if:
Women wore logical costumes. I'm not saying they have to be super-reasonable and realistic. I don't want spandex and bright colors to go away. I do, however, want them to cover up more and not look like their breasts are going to fall out. I don't want to be able to tell whether or not they're wearing underwear, but if I can tell I'd prefer they are. I'd like heels to be reasonable if not eliminated. I don't want skirts to be the default.
Women were drawn with muscles. I don't care how big their breasts are as long as the proportions are realistic. I want them to have abdominal muscles and thicker limbs. I want them to look more like athletes and less like supermodels. I also want them to look realistic--some artists have disproportionate women but proportionate men. However, I think that most artists who can't draw realistic women can't draw realistic men either.
Women weren't objectified. To clarify--objectified doesn't mean idealized or big-breasted or hotter than I am. This means they have blank expressions, are displaying their sexual features for the audience without any display of emotion or personality, or are helpless and terrified when normally they'd kick ***. I don't mean that you can't show women in peril or looking sexy on the cover, but their sexiness should be secondary to them being pissed off/evil/awesome/fighting/smart/whatever. Anything like the Heroes for Hire cover that plays up a women in danger and afraid as being sexy is garbage.
I don't think I've ever seen a woman be poorly written because of her gender. Although I've heard stories about it happening, it seems to be more ****ty writing in general than prejudice or misogyny. However, I have heard about rape being retconned or put into a lot of character's backgrounds. I don't think that should be played up as the only bad thing that can happen to a woman or the only reason a woman should become a hero, but I think that poorly written rape is, naturally, restricted to bad writers.