Everybody was touchscreen fighting
Not wishing to be left out, Capcom's Rosario + Vampire (which, Capcom has confirmed, won't be appearing in the west) also uses the touchscreen in a novel way. Rather than the traditional method of pressing buttons, the game's combat sequences are carried out with directional stylus swipes, with different Ouendan-esque strokes producing certain moves.
It's definitely an interesting approach, and it makes us wonder whether we'll be seeing more fighting games embracing this method in the future. If Rosario + Vampire pulls it off well, we wouldn't bet against another developer picking up this idea and running with it.