This runs very well on mobile Safari as well. In fact, the frame rate is smoother on my iPhone 3GS than it is on my MacBook Pro.
Edit: After some further testing I noticed that setting any dummy CSS transform boosts transition/animation performance on iOS. For example: -webkit-transform: translate3d(0,0,0)
I would like to see a cube like thumbnail map with a highlight showing you where you currently are / or perhaps subtly hints at where you can go next. Currently it might qualify as mystery meat navigation; yes I think presentations/slideshows should have the ability to know where its going and or a promised end time.
Edit: After some further testing I noticed that setting any dummy CSS transform boosts transition/animation performance on iOS. For example: -webkit-transform: translate3d(0,0,0)