Please tell me I'm not in the minority here when I say: who gives a shit?
In the words of a random female Castanic from another game that stirred up at least just as much controversy over boobs and the portrayal of women: If you don't like it, leave.
That's really all there is to it. They can design the characters they want, and make the games they want and... you, you can choose not to buy the game if it offends you that much. Call of Duty offends me. I don't own anything past Modern Warfare 2. It's easier than complaining and makes a bigger impact.
Personally? I don't like this new character. She's shown up on certain sites for at least a couple years now, and, no... she isn't what I consider attractive. I'm not going to go into a rage, however, because she simply exists. Don't get me wrong, I'm looking for a strong, good example of a well done female character who isn't sexualized more than anyone here, I guarantee it, and most of the characters I've created, for game concepts I'm too lazy to put an alpha up of (regardless of how beneficial it may be) in UDK, satisfy that craving. As much as I'd like to see better examples of female characters, this character, in particular... doesn't piss me off, and it shouldn't piss you off. From what I can tell, she's not memorable, not worth your time, and exists for fanfare. There's nothing wrong with that. If the rest of the world wants to point this game and say 'this is why games r 4 kidz look at how imatur they r' then fuck the rest of the world in its super tight sphincter with the biggest fist you can find, because when all is said and done, the only one who can decide whether or not you like something, is yourself, nobody else.
And if you really care what the rest of the world thinks, throw Bioshock at them or something. We have mature games, or at least, we have games that strive to be mature. There will always be a market for that. We also have immature games that wear silly hats and like to draw large, cartoonish boobs on everything. There's a market for that, too.