I disagree with almost everything here.
First, I think the premise that the last Tomb Raider failed to reach it's targets because of any problem with the game is foolish. It failed to reach it's target because it faced insane competition. If it had been launched at the same time last year, it would read 2M easily.
Second, I don't think there's anything wrong or stale with the franchise. You certainly can't get 1.5M with a problematic franchise. The only competition to Tomb Raider is Uncharted. Which, btw, is about to see it's sequel AND has been selling fine, thank you.
Third, it's not a realistically proportioned body that will enhance acceptance by women. Now, if you go for freakishly THIN body, then, sadly, you might pull some women to it. Add about a hundred different fashionable shoes, boots, high-heels, etc which she keeps changing throughout the game, and I'll guarantee it. This whole paragraph might sound horrible sexist, but these ARE women magnets -- just like attractive boobs are men magnets, even if were aren't all horny teenagers. My point, anyway, is that both genders have their biases.
So, summing it up, there's nothing wrong with the game, if they keep doing what they did with Legend, Anniversary or Underworld they'll keep doing fine, and if they DID chose to appeal to female gamers, there ARE, like it or not, buttons they can push that will work just fine. Of course, they'll probably screw it up, in which case they'll manage to bury the franchise.