For my perfect device...
Start with the Sony PRS-900 then add the following...
- A reading queue that you could add books to and sort.
- A way to mark books as read/unread.
- Collection management on the reader itself. (Creating, adding to and removing from, sorting, deleting). Without having to use external software.
- A way to view the book details (cover, author, publication date, etc), without having to be reading the book.
- More info in the details - tags, length, synopsis
- Be able to specify the info shown in various view, for example the title, author, and length. Or cover, author, and tags.
- A clock display.
- Automated periodical and RSS feed subscription delivery.