I love you all to death (Just so I can smash bros with you) (SSBWiiU/3DS)

[Iocus]

From what could be seen in the trailer, I don't think the customization system will go that in depth. At the very least, from what they showed, it seems you are able to modify the properties of the abilities already established (Mario shooting a slow, large fireball, Mario rapid-firing small, straighforward fireballs, etc.), so you'll be able to change the trajectories of projectiles, make some attacks lag more, lag less, have different effects, stuff like that.