I know. Doesn't mean I agree though. I think that's a horrible reason to include Snake, a character who doesn't have as strong a Nintendo history as other third party characters do. Roy may have been a clone (and his original purpose a bit of an advertisement), but I'm sure they could have decloned him. Luigi's become more of his own character with each iteration. And the differences with other clones were extended in Brawl (except for maybe Falcon/Ganondorf)