It CAN work, that's a given, but that doesn't mean it's likely. This is Sakurai, he's done his fair share of creating movesets for what we would assume to be unorthodox characters with no official way of combat, but even then...it's ultimately up to Sakurai if he wants his team to take the time to develop said character, and since they're pressed for time and they probably have a few newcomers in mind, more will likely come in mind in the coming months as I can assume the roster is far from set-in-stone, I don't see Kawashima being one of said newcomers, and Nintendogs...well, we already saw the 3DS stage.