In all seriousness, I think their reasons are:
-Trophies: Some cleavage, upskirts, and booty here and there. I'm actually
slightly surprised; I don't think I remember seeing this much from trophies in Brawl/Project M.
-ZSS: Incredibly skin-tight suit, even though nothing's actually showing.
-Characters: Possible upskirts from other female characters, such as Palutena (Left side of dress) and Peach (Who's had one for at least 2 games, now). Zelda wears leggings and Rosalina has the "entire galaxy under her gown" to censor herself
Also, is anyone else a tad surprised that the rating of the next Smash went
down from T to E10+?