I just know I'm going to be bored within seconds if I buy it anyway, purely personal opinion. But, I've been a long time fan of the Tekken series, there was depth (to most characters), a little bit of a story (a big story in most cases), different modes, more playable characters, and more areas to fight in.
If their sticking with Pokken as it is at the moment (which I doubt), releasing this on Wii U is a huge mistake. If this game almost lacks any of the above, not just me, but many people will be disappointed. I hope they take the time in the months leading up to it's release, to see the potential of the game, push for more playable characters, and take advantage of how badass these graphics are.
If it stays like this, my answer will always be "meh, that Pokémon fighting game that had potential but never went anywhere."