The world gives a nice vertical element to Kingdom Hearts, even if Sora seems a little slower than normal. The ocean world breaks up the style of gameplay enough to give a new and interesting gameplay. But it seems like people don't like it much, why is that?
I like different kind of gameplay—being able to move in all three dimensions. Of course once you’ve done Peter Pan you’ve got that everywhere.
I also having Ariel on my team. She has some cool moves.