...MacBookAir is rubbish. Period.
Non replaceable battery no access to ram or hdd no ethernet only one usb stupid gloss screen poor CPU speeds...
This machine certainly seems to have polarised opinions so, at the least, Apple has got a lot of publicity from it! If you are thinking of the MacBook Air as a desktop replacement then "rubbish" is probably fair comment.
To pick up your comments, the battery can be replaced by service technicians. I have replaced batteries on old notebooks but I have never carried a spare fully charged battery with me. Is that what you want to do?
Non-upgradeable RAM and HDD may be an issue for some. Ethernet is available but you have to use a dongle via the USB port. As for USB ports, though I have multiple USB bits hanging off my desktop machines I have never needed to connect more than one USB device to a laptop. If it's an issue then there are workarounds.
AnandTech have quite a nice appraisal of the MacBook Air here
. Personally I think 2GB of RAM would be plenty on an ultra-portable and the solid-state 64GB hard disk sounds (
) perfect. I don't need more than one USB port though a dedicated Ethernet port would have been nice. As for the screen, I haven't seen it yet so I'll have to defer judgement.
The big issue is, of course, price but if it's the design icon it appears to be then sometimes value for money is less important. I'm not rushing out to buy just yet, though. Never buy version 1 of anything if you can help it and maybe a silently released "version 2" will have the forthcoming mobile Penryn CPU instead of the 20W TDP Merom currently used. Even if that doesn't happen it may be a good idea to let others sort out any bugs and, hopefully, wait for the price to drop a little.