Mario: FLUDD's knockback needs to be MUCH stronger, the FLUDD needs to be "aimable" and it should be able to put out fire/nullify fire projectiles. Or something of that level.
Ganondorf: Needs to use a moveset that involves his sword and some of his actual magic moves. Even though he's based on his TP appearance, he should use some of the magic from OoT.
Falco's moveset is fine, but change Up B from fire to something else.
I have no opinion on Ness and Lucas; I think them both having Starstorm is just fine.
Roy's movelist should honestly stay the same in my opinion; Marth's been changed enough to the point where Roy's movelist should be fine. It's just like Falco; Fox gets the changes and Falco stays "retro" but still gets his own original A attacks. Just change his animations around and maybe some of the effects and you're good to go.
Marth's Dancing Blade doesn't have the slight midair forward movement anymore, so Roy should be able to keep that in his Dancing Blade combos. Roy's Up B should go up slower and have a different animation but do collective damage instead of one big "just right" hit. Roy should have the second-strongest Counter, with Ike's being the top, and Roy's timing should also be inbetween. Roy's Charge B should have the biggest striking radius, whereas Ike has the strongest strike and Marth having the shield break effect.
I don't know much about FE so someone else would have to come up with a Final Smash for Roy.
Ganondorf: Needs to use a moveset that involves his sword and some of his actual magic moves. Even though he's based on his TP appearance, he should use some of the magic from OoT.
Falco's moveset is fine, but change Up B from fire to something else.
I have no opinion on Ness and Lucas; I think them both having Starstorm is just fine.
Roy's movelist should honestly stay the same in my opinion; Marth's been changed enough to the point where Roy's movelist should be fine. It's just like Falco; Fox gets the changes and Falco stays "retro" but still gets his own original A attacks. Just change his animations around and maybe some of the effects and you're good to go.
Marth's Dancing Blade doesn't have the slight midair forward movement anymore, so Roy should be able to keep that in his Dancing Blade combos. Roy's Up B should go up slower and have a different animation but do collective damage instead of one big "just right" hit. Roy should have the second-strongest Counter, with Ike's being the top, and Roy's timing should also be inbetween. Roy's Charge B should have the biggest striking radius, whereas Ike has the strongest strike and Marth having the shield break effect.
I don't know much about FE so someone else would have to come up with a Final Smash for Roy.