All except for the fact that, for the first time in the series, we'll get to play as a female Link!
Seriously though, Link looks so much like a girl in this picture, and in this game in general, that it kind of makes me wish they would just go ahead and make such a bold move in a spinoff. Or, you know, in a mainline Zelda game.
I would actually be in full support of a female Link one of these days (as long as she was an interesting character and not hypersexualized eye candy), not as a permanent thing, but as a once-every-few-games thing. It's not as if the different Links up to this point haven't already been drastically different.
On another note, I would like to see more Zelda games where Zelda
isn't kidnapped. Having Zelda as Link's companion in Spirit Tracks was great.
Oh, uh, and to keep this Smash Bros. related, while it would be neat to see content from this game, trophies perhaps, I kind of doubt we will. It's probably showing up too late in SSB4's development cycle to affect much of anything.