Her headbutting up-tilt...

karate kicking up-air...

and more explosive side special would make even more sense on Daisy then Peach.

You could even say that her having the old fiery Peach Bomber could be a subtle reference to this infamous Mario Striker victory animation

Also, Toad would be completely removed from her moveset so she can utilize Peach’s old grabs while Peach can keep Toad for hers.