I've been a mobile user since the day my company hand out a 755CD. It'll last for just under 2 hours with a brand new battery but as it ages, you're lucky to get 30 minutes. So you right to put battery life on the top of the list. But what impresses me is how the carrying case morphed, from a simple sling bag, to a back-pack, a stroll-along, and lately, just leave it in the office cupboard. We're back to a table top device, same conclussion of how this form factor, the laptop, isn't really as portable as we wanted it to be.
I like the dockable mobility concept proposed by NatCH where your essential data files can be transportable and perhaps view and/or edit sparingly, but would need to be "docked" to a standard desktop for heavy duty work. I think something like this will suit me nicely. It should fit in a standard shirt pocket. I'm still a back-pack user, not ready to move to a stroll-along bag, but definitely don't want to don a fanny bag
