Peach could have attacks based on her "emotions" from SPP. There's no need to change how attacks work, maybe just how they look.
Like for instance, when Peach floats, we could use an animation based on when Peach is in the joyful state that she floats arounds laughing. And have two A-smash attack based on her raging and crying states. Also, her B attack (that I never really understood what the hell was that) could be a counter with Perry. I remember Perry having an ability to grab an enemy or something like that, which could be a grab.
edit: also, a Seismic Toss grab attack for Charizard, he seriously needs one
Like for instance, when Peach floats, we could use an animation based on when Peach is in the joyful state that she floats arounds laughing. And have two A-smash attack based on her raging and crying states. Also, her B attack (that I never really understood what the hell was that) could be a counter with Perry. I remember Perry having an ability to grab an enemy or something like that, which could be a grab.
edit: also, a Seismic Toss grab attack for Charizard, he seriously needs one