I'm going to sound like a total fanboy, but
"The world's thinnest notebook . . .". And Steve holds it in one hand, just showing it, and the crowd is just going wild. "Let's go explore this in more detail!"
You have to remember that before the MacBook Air, thin and light had an entirely different meaning. Netbooks weren't solving the problem either. The MBA was expensive when it was intro'd, but the first edition was more of a proof-of-concept. As time went on, it got more affordable, to the point of replacing the standard MacBook.
Hoping to see a Retina Display with 12+ hour battery life. That would make it perfect.