Hm. The Peach description really leaves out a lot for me (although I haven't played Peach since MK64). There are two reasons I played Peach in MK64:

1. She's light.
2. She's really annoying to your friends.

It was great fun irritating everyone else when they had to hear constant repetitions of "Bingo! Bye-bye!", or "Yeah! Peach's got it!". Wish they'd make her light again, so I could go back to using her... :(