While Advanced Tits and Dragon, aka Game of Thrones is nearing the ultimate climax, there remain some characters we've not yet been fully introduced to. Sansa and Arya are by now old enough to star, well: stark-naked, on screen, whereas Tormund...they'd probably need as big a sfx budget for the bearmuncher's member as for dire wolfs, Wun Wun and dragons combined.
Finally, there's a more average Joe choice (but reading books makes you sexy!).
Your vote: Sansa