I'd be very interested in hearing from others use the MBA in this use model.
Thanks
Hi there - I travel quite a bit too (about 17-20 flights/ year to Europe and South East Asia). Wholeheartedly agree about the importance of shaving-off weight when you are moving around.
Here are my thoughts on the topics you mentioned:
1) Yes, indeed, if you need to have several USB devices connected *at the same time* then you need a small USB-hub.
In my case, I just alternate when I do have several things to plug in but that's rare: a USB thumb drive, the USB cable to my camera and my iPhone. That's it. Not really an issue for me.
What do you need to connect to your laptop via USB currently?
2) Indeed, mini-DVI to VGA adaptor: have a couple in two different bags to lessen the likelihood you'll be without one when you need it.
3) I haven't tested the battery under the use you described: I do turn off BT when I don't use it, but I have WiFi on at all times. I will test it like you use it and report back. As it is I can get 3.5 hours easy with WiFi and about 5 apps running (I have SSD on my MBA).
4) You are correct, it does take some time I have noticed but note: charging takes more time on 220V (outside of the US) than on 110V it seems, which is odd. If anyone has any theory why, I'd love to read it.
If you find yourself away from a plug for a while, carry a battery with a 110V plug like
not necessarily this one but this is an example. It's more weight but better than no juice at all when you need it. I haven't use one of these myself but photographers friends (also sensitive to total weight carried around) do and they never go out with it.
5) The tape would have to be cut small to cover the USB port alone but it is feasible and you could even do it yourself beforehand.
6) I recommend the SSD as opposed to the HDD which spins "only" at 4,200 rpm (hence the spinning beach ball if you try and multitask).
You won't believe how light and pleasant it is to carry around but, yes, do wait for mid-october/ the next refresh before jumping and then some more if you can in order to avoid the eventual problems generally associated with the first batch produced.
Hope this helps.