Again, I'd like to raise the following question:
Every Smash tournament I've seen has never had any restriction to which version of Smash is played. To my understanding, there are three versions. Version 00 and 01 can change Bowser and Mr. Game & Watch's style a bit (not too much, but still enough to raise this questions,) and version 02 is the most commonly used for tournament play. If Melee is going as far as to have a "world tournament," so to speak, I think this issue should be covered. And, at that, which region's release will be played? I'd imagine NTSC, but PAL does have some noteable differences that can change any given character's metagame drastically. I'd imagine that NTSC version 02 would be the default played, but some might think that unfair. Perhaps some version/region counterpicks are in order?