One common thread in these extremely lucrative vampire/werewolf books and films is innocence discarded for love, a surrender or abandonment of the self to a protective monster. But the monsters pose no real threat to the heroines. In fact, they seem to be captured, controlled, by the women's sex. (There's a metaphor here for the way the audience sees, or wants to see, themselves--vulnerable, but ultimately controlling the violence. Perhaps even inspiring it.) It is really very difficult to admire the heroines, or the audiences who tremble with passion as the virgin moves closer and closer to accomplishing her own seduction. Guiltlessly, of course. That is vital.
Teenage vampires in love. Powerful victims coyly pursuing their seducers while maintaining a plausible illusion of innocence. An illusion powerful enough to delude even themselves.
Vampires and werewolves have been done to death, so to speak. Is there an alternative? Could one sell a book that stripped away the illusion? Present a heroine who not only tames the monster, but uses it against her enemies -- who will, naturally, be other women. And what will the monster feel? Shame?