If they base off of the CoM manga, then no! It would be one of the worst movies ever made. But you know, since makes fun of the game and is basically like Space Balls, then you'll have to do it right. Since it is meant to make fun of the game and make it look stupid, the movie makers would have to go full stream with the nonsense. Which means Sora has to be played by either Will Farrell or Ben Stiller and Marluxia has to be played by either Jack Black or Jim Carey. Since Sora and Marluxia are the only two characters in the manga who act like they are in Saturday Night Live, you have to cast them right. Give them some slap stick humor followed by some silly lines and you got yourself the funniest movie of the year.