A sprinter who doesn't get dropped on climbs--what a concept! Sagan as a contender certainly stirs the imagination. Merckx started out as a sprinter, too.
My vote is for an anglophone podium, Evans, Wiggins, Hesjedal, you pick the order. Wiggins has the preparation and the team, Evans is a bit off the mark so far but is notable for riding strategically and doing what needs to be done, and Hesjedal rode a great Giro and shouldn't be worn out.