If this is supposed to be a leak, it's fake.
Dixie Kong is 3rd most important DK character now. Her importance through time has surpassed K Rool, who can't even return in his own franchise.
Sheik will not be cut, that is crazy.
Impa can be added, with a unique moveset.
Krystal can be added, if Wolf stays. And Wolf will stay.
Snake isn't going anywhere. Why would he? MGS5 isn't on Wii U? Who cares?
There is no reason to remove anybody this time around. Young Link and Pichu were the only ones actually removed before Brawl. We don't have that ****ty, unnecessary, or clone-y of a character as them time around.