As for the tri-fold, or mini-laptop design, that's what Sharp had with their C750 designs.

There was 2 issues:
1) I was afraid I would twist the screen the wrong way and snap it off
2) it made for a much heavier device.

Which brings me to my $0.02 worth of a topic.

Can we have something that can be placed in the pocket without ripping my shirt off my back. Makes for an awkward social situation.

But I like the idea of the tri-fold where 1 is the cover for the screen.