First, she obvi doesn't need any gimmick to be awesome.
But yeah, I am wondering what it (If anything) could be.
For some reason, I get the impression she'll be a temporary stat boost character. As you may know, there are two unknown animations that look like deep breathing and sun salutation. These could very well be "stat boosters"
For instance (This idea is bad, but what initially came to mind) she might run on some sort of energy, and would get tired, making her perform overall less effectively, and would need to recharge with deep breathing or sun salutation. I'd hate if this were true, but hey, just bringing it up. > , >
Another thing is that sun salutation/deep breathing could temporarily make her faster, or make her next attack/smash attack more powerful, or heal a bit of health. Very gimmicky and I could see happening. Otherwise, sun salutation is a sun-like projectile or a really stupid attack. > _ >
Those are my thoughs for gimmicky things she could have. But I get the impression Sakurai would've mentioned something by now if she was going to have some big gimmick. I guess he did mention she's going to randomly give out health tips/exercise talk mid battle, so that's pretty unique, and really cool IMO.
and trollish. XD