I would love for her to be a Playable Character! If Sora and Riku are playable, why not Kairi? And KHIII is perfect for it! Imagine BbS style where each of the Destiny Islands trio have different storylines that intertwine together at some points! But getting back to topic, I think it's time for Kairi to be a part of the spotlight, not some Damsel in Distress.