So you're logic is "omg it's stupid".
That's very nice. If you can't provide real logic, don't bother speaking.
Give me literally one GOOD reason why a character in Brawl has to be a unique character in order to be playable. There have been many Yoshis, many Pikachus, many Jigglypuffs, many Pichus, many Squirtles, many Ivysaurs, and many Charizards. Jigglypuff, Pichu, Squirtle, Ivysaur, and Charizard do not represent unique versions of the species, but for some reason that not even the world's top scientists can explain, Moogle cannot be in.