Samurai Goroh (F-Zero)
King K. Rool (Donkey Kong)
Wolf O'Donnell (Star Fox)
Majora's Wrath (Zelda)
Galacta Knight (Kirby)
X (Mega Man X) [Replace Mega Man or buff him to make him more viable]
Raichu (Maybe Alolan, replace Pikachu)
Dark Samus (Metroid)
Rundas (Metroid)
Gandrayda (Metroid)
Shadow The Hedgehog (As a Sonic alt)
And, although I never used him, Snake should be back, as a respect to how good he was in Brawl. That is all I can list, based off the current and previous rosters. Feel free to list characters you would want, which I am not aware of.
P.S. : Please, no one mention Goku, it is tired and old by now.
King K. Rool (Donkey Kong)
Wolf O'Donnell (Star Fox)
Majora's Wrath (Zelda)
Galacta Knight (Kirby)
X (Mega Man X) [Replace Mega Man or buff him to make him more viable]
Raichu (Maybe Alolan, replace Pikachu)
Dark Samus (Metroid)
Rundas (Metroid)
Gandrayda (Metroid)
Shadow The Hedgehog (As a Sonic alt)
And, although I never used him, Snake should be back, as a respect to how good he was in Brawl. That is all I can list, based off the current and previous rosters. Feel free to list characters you would want, which I am not aware of.
P.S. : Please, no one mention Goku, it is tired and old by now.