When I first picked her up, I too got the sense she was rushed, mostly because of her drive. It's not very creative... you just use it to make her moves sort-of-as-good as the rest of the cast's. I hope one day they change it so that the charge versions of her moves have some kind of special or interesting property besides "average damage" (plus the misc. gimmicky bullshit they do now, but I don't count that cuz a) most of that isn't very good at b) uhm, I'd like her regular moves to do average damage?). Maybe slow your opponent's moves for a brief period of time? Because they can't see? Isn't her weapon supposed to have some sort of light-stealing power? I can only pay attention to story mode for so long before my brain starts to try to kill itself...
She almost seems to have MORE different types of specials than the majority of the cast, except, you know, they're bad. I wanted her to be a character where in order to keep your pressure going, you have to be able to rapidly choose which version of her moves to use, like her 214x's depending on how far away they are, or have different angles on her j.214's... The problem is, all of her moves suck in some way. Most are too slow on startup, the DP has no invulnerability, etc. If they fixed it so her specials weren't so ridiculously awful that'd be a nice improvement.
Hahahaha, from what I hear about how long it took to balance GG, I might have to disagree with you on that. Although I do agree that we don't REALLY know all the changes they made to Tsubaki, because so few people actually play her. Still, ain't looking good. Ah well, at least they're fixing Rachel....