I registered just to post my thoughts on current ebook design trends.
Asymmetrical design.
Grippable ridges on back (like the back of a samsung Genio)
A switchable on/off power switch rather than the push to style that is popular. Bit like the hold button on an iPod.
Make it so I'm not tempted to rip the serial number off! Damn you Sony!
Non visible rubber corners.
The main thing I would love if is the entire book was curved concave with the screen slightly recessed and if there was no way to tell where the edge of the screen was. Without a visable edge the screen would appear bigger. I mean kind of like on some older mp3 players/phones
(example)