Maybe make a storyline for an army of keyblade users, that there wasn't just a few keyblades, but that a keyblade was an extention of the heart. So anyone with a strong heart could go into battle. Then you could choose sides, dark light or twilight. Maybe customize your keyblades, turning them into different weapon types, and just have the best mmorpg out there. MMORPG's can get tiring when you just click a character and then it attacks for you, but then you have kingdom hearts with its amazing battle system now having a mmorpg with KH's battle system would be amazing! It would take skill to play and not that endless level grind. Being able to jump around dodge out of the way. Use awesome abilities, get some awesome combos. And then having PvP that way!!! Now that would be awesome.