Touch screen for Air
I like my keyboard and screen for ergonomic comfort but I like the touch concept.
Make a Macbook Air with a display that can be flipped around and then used as a notepad.
Then flip it back and use as a conventional laptop and maintain touch capability.
I can type, then move a graphic with my finger into place next to the text, then flip it around and use my finger or stylus to paint, and then flip it back over and type an essay on the keyboard all while maintaining ergonomic comfort of eye-keyboard-hand-neck comfort.
A simple design philosophy - why hasn't Apple done this yet?
Powerbook G4, Mac OS X (10.4.7)