I'm talking of course about all of the features/extras that Apple boldly decided to leave out. After thinking more about the actual day-to-day with the Air, the apparent shift in philosophy makes sense. Personally, my usage patterns are such that, for the majority of the time, all of my MBP's extra hardware features (over the MBA) are not being utilized. Say, 80% of the time. Away from my desk, I would put it at very close to 100%. Anecdotally, it appears that many (most?) are similar to myself in this regard. Currently, as an MBP owner I am forced to carry all of this 'useless' equipment with me everywhere. Why should I? With the exception of Firewire, all of these features can be added to the MBA through the single USB port. So, I can carry the USB-powered Superdrive with me for the relatively few times I need it (or just leave it on my desk), and enjoy the slim form factor and friendly weight of the stock MBA for the other 80-95% of the time. Same could be said for ethernet, USB hubs, and all the other "missing" features. For a portable device, this is really what makes the most sense! Of course, all of this is compelling only if your usage patterns are similar to that described above. Still, I feel that Apple isn't getting enough credit for pushing things in this direction. After waffling for the past couple of days, I've decided to buy one (going with the base as a hedge against rapidly falling SSD prices/iPhone-like price break).