I'd love to see if this lives up to the hype. If they can deliver it with Ubuntu for $399 (with keyboard), or if someone ports Maemo to it, I'd be in.

Use an internal USB slot for 3G card.
Use another internal USB slot (or two) for a full size SDHC card reader.

I think I could be QUITE happy with that as my "bigger than pocket, smaller than desktop" device.