Sonic- final smash should have been chaos blast or something like that. his fire ball move from sab2
light dash, his ring move thing,
Ganon-should use a sword
wolf- more of a long range thing since he never really had close combat fighting in any of the games he`s in.
samus- should have different beams
luigi`s final smash should have been his ghost vacuum he sucks everyone into his vacuum and kills them.
fox- should have that staff from starfox adventures.