ASFXX benefited a lot from the rearrangement that allowed for a deeper / heavier vocal. I don't think many songs have had changes as drastic done do their arrangements aside from very few concert staples.
Watching through SEASONS COMPLETE, the song remains rather airy but her voice in the time between the '07 and '15 performances changed a lot. Looking back at the a-nation '15 one she really looked amazing at that show.