I'll tell ya who should be in the next SSB; Ninten/Ana, Teddy, and/or Poo from Earthbound Zero and 1. Ninten or Ana should be like Ness or Lucas-- but with COMPLETELY different movesets! HOw about PK Beam instead of Fire? Freeze should be there too, but not like PK Flash. It should be like an...
Given SSBs controls, Ryu from Street Fighter. He would be alot easier to use due to there not being the requirement of button combinations to do his special moves.
B -- Hadouken
Up B -- Shoryuken
Side B -- Spinning Kick thing
Down B -- Ground Spin Kick
Final Smash -- Giant Hadouken
EDIT...