But just that, it's my opinion. There are a LOT of empty spots in this roster, so, despite what you believe, we have no proof that there won't be single characters mashed between multiple ones. We have no defining proof that there will be a 3rd DK rep or Mewtwo for that matter, all we have is speculation and how 'likely' a character can be, which isn't worth much. The majority of us thought T.Link/Ike/Lucario were all cut, but look how silly we look now.
I'm just saying, just because we think we're right, doesn't mean we are. Just because a character has a lot going for them, doesn't mean they're secured. Mewtwo is also possible of not coming back, mind you, so it wouldn't have to be K.Rool being excluded. All we have for Mewtwo despite Gamefreak's obvious pushing of the character is Sakurai's coy statement, and with 5 Pokemon already confirmed more or less, I find the possibility of 6 a bit stretching.