The concept of the Kindle as a repository of many books has great appeal to me, especially for time sensitive material like guidebooks or disposable things like textbooks and papers.

The main problems for me are
1) Form factor of the kindle. It's too darn big. I want the original 6" screen in a casing not much bigger than the screen. thicker than currrent is ok - I want it to fit in a cargo or jacket pocket so I could carry around a guidebook.
2) The fiction available is less than appealing and the method for selection even less so.

That's the great thing about used book stores ^^ Bookstores are one of the great pleasures of traveling to me, a whole different range of used books.