Cloud is handsome without being too effeminate. Plus he's both cocky and funny whilst also can be quite kind.
They'll all be sexy because LOOK AT THESE GRAPHICS!
Ehem. Well, as a woman I say Reno, Zack and Vincent, they already looked good in Advent Children.
Mai Waifu, Jessie.
Tifa obviously. She's always been a sex symbol in the entire FF franchise because of her pretty face and large breasts.