If anyone wants to try something amusing, play as Sephiroth in Hard Mode, and hope that you get the castle stage for the fourth match. Jump to the top, and then just sit up there and cast Black Materia. If you release it right (you have to charge it at least to the point where it starts flashing, or it will fall at an angle, instead of straight down), you can almost always catch your opponents as they run up the side, and then the Meteor will drag them down to the bottom, hurting them the whole way. Cheap, but fun. Sephy is the king of the mountain.

Not wonderful that I've discovered a way to abuse the AI so quickly, but, still, this game is looking great.