A compelling upgrade to the Sony Reader for me would feature:
- Native drag-and-drop via Windows Explorer, with standard file/folder directories. No proprietary file management.
- Higher contrast for a truly paper-white background and jet-black text
- Bluetooth for document transfer and VCard synchronization
- A PIM, as implied by the previous feature
- Onboard document deletion, or a button to mark for deletion on synch
- Native HTML support
- Native HTML support
- Almost forgot: native HTML support
- Proxyless RSS
- Better button placement, as Xenophon said. The upper paging buttons should by moved from the center of the edge to the upper third or higher, closer to where the thumb naturally rests. And they should be tapered rather than sharp-edged. The bottom page button on the same side, IMO, is useless, requiring either a contortion of the left thumb to access or an assist from the opposite hand that's not holding the device. Since page turning is far more frequent than page/menu navigation, the button and joystick positions should be swapped.