Hey, if we are talking about a hypothetical perfect reader I would have to say it should have an adjustable screen. I need to be able to read my large pdf's, but I don't want a screen that size to read novels. As long as I am in the realm of scifi I might as well have it linked to my mind so I don't have to move to turn pages, I agree that reading in bed would be easier that way. If it was linked to my mind I could just think about annotations and have them pop up, too. This would also negate the need for touch screens, too. I know I would like wifi, but I'm not sure about 3g.
And it need to always be perfect lit, and consume little power. (Maybe powered by the electrical impulses from my mind???)
A girl can dream, can't she?
