Dion Blaster
Member
Yoshi has a long history of being kept out of these games if Yoshis are not rideable here you are forced to buy NSMBU
also has his own game in the works
there is more proof of Rosalina in this thread zero Yoshi
Not in 64, playable in Sunshine.
Not in Galaxy, playable in Galaxy 2.
Will probably be in the next 3D Mario game.