Doing the requirements to get World Champion isn't that bad if you're playing blitzball along the way during the main game. Whenever I reach a Save Sphere, I play a game or two. By the time I get to the endgame, I've already met the requirements to get it.
--
SuperNiceDog be rollin'
http://img710.imageshack.us/img710/8516/whatisdesiresig.gif