Every game that you can procure has some form of marketing, even if it is just limited to the box the game comes in, or the website it is accessed from. With that in mind I'd like the marketing to:
Show me a mix of character types, not just one skinny, large breasted woman wearing little more than underwear. (One game I will never look at, and know virtually nothing about because of this is Evony).
Advertise the social/team aspect more. I believe someone earlier in the discussion mentioned they would like to see a study in time vs progression in male vs female players. It is possible that women play for different reasons. I personally see no need to be the first/strongest in the game world, but would rather have fun playing with others. I am not saying this differentiation is clear cut across the gender line.
And my pipe dream is to be able to play a game like Halo and not get hit on or screamed at because I'm a girl on voice chat. I don't go on there to hit on guys or scream at others, why should I have to deal with that? I won't even wear a headset anymore. I'm not sure how developers or marketers would be able to address this issue, but it does hamper my enjoyment of some games.
I am well aware that I am not the voice of every girl gamer out there (nor am I necessarily even consistent in my own views of games since I quite enjoy DOA beach volley ball) Big boobs aren't always a deal breaker, but lets have some choice?