K1 owner....
1. Folder support - PLEASE
2. Native PDF support WITH bookmarks
3. Return of the SD slot and replaceable battery in future Kindle models....this is why I haven't upgraded (I take my kindle camping....no replaceable/spare battery is a biggie for me)
4. A simple software/firmware upgrade that gives you page numbers instead of lines - something as simple as looking at your current selected font size and the total lines in the book and it calculates this into total pages. Add the ability to select between which of the two formats you prefer so that everyone gets to be happy. So, if you like the current format, you can keep it. If you'd prefer a simply calculation of "page 251/563" you can get that instead....and it doesn't have to reflect the print version page numbers - only give me how many more page flips/turns I have to complete the book. This would make reading on an ereader more natural, at least to me.
5. Easily customized screensavers - I dislike the ones on the K1 passionately - in a world where everything else can be customized, the adherence to these horrid screensavers is a irritating. Let me change it up!
6. More supported formats
7. This is more about the Amazon Kindle store - but how about price matching? If I find the ebook (note - I'm only specifying "ebook" here...not used paperbacks, etc.) for less on another ebook provider site....how about Amazon matches or beats that price since I'm stuck purchasing from them?
8. Desktop software (I know it's coming soon!) so that I can read my books on my laptop if I chose (kill some time on my breaks at work!).
Honestly, I LOVE my Kindle 1. I've had it for a little over a year now, and my reading has increased dramatically. I can't imagine going back to those clunky hard covers I used to lug around everywhere.
As for all the "hate" comments about the Nook, etc......I actually look at this all differently. We are fortunate to be experiencing the transition of a long standing medium from the traditional (thousands of years old) printed page into a new digital delivery system. We're in the infancy of ereaders. NONE of the manufacturers have gotten it perfect yet. I, for one, am glad to have the competition out there. It makes each of the companies work harder to give their customers the best product. I want the Nook to do well so that Amazon has to respond with an even better, more user friendly, CHEAPER Kindle to stay competitive. Basically, hate the Nook or be a fanboi of it as much as you like. The Nook is good for Kindle lovers and haters alike.