The E3 invitational tournament is what finally sold me on the game. Seeing the game played at a decently high level showed off a little more of the depth and tactics. I hated the brawl modes of the test arms, and 1v1 is clearly where this game shines.
I will pick this up out of support for Nintendo and their new IP. I am not super optimistic that I will play it a whole lot as I'm not huge into fighters, but it should be good for a few matches when I have friends over.