Why can't Square release a standalone version of blitzball that followed the "Mortal Combat" model ? (Actually I'm thinking about Soulcalibur since I never played MK at home)
You can pick players
You can unlock moves and players
You have different game stadiums (as Soulcalibur has the arenas)
You can do multiplayer battles, endurance tests,..

It would be so cool! And I bet it would be a hit with soccer fans!