Dwig, All good points. Actually, my post was a response to the original posting and didn't see your comment until later. But it seems like we were on nearby wavelengths.
I especially think your observation about making things work for the average non-techie is important. People have to really really want to do something before they will even go so far as what people do for iPods. I don't think there's that natural drive for ebooks, so someone is going to have to figure out how to make it really simple.
Yes, that's right... Minority Report was it!
But the trick with the desk display is not to think of it. It's to make it real. Hope someone figures that out. Right now I think computer displays built into desks for people like tv news reporters is about as fars as its gone so far.