I disagree, tablets don't suck. Tablets have had a problem of short battery life, screens are not good in sunlight and the interface is that of a laptop/desktop rather than tablet, where a user would have access to a keyboard and mouse. I think since multi-touch has become available, this market has been changing for the better. I also think that once the multi-touch colour e-ink type displays become more prevalent and battery life creeps over 12 hours (which is already starting to happen) these devices will become more popular. The only problem left is to make it possible to view video on an e-ink type display, although the Pixel Qi display has provided a solution to this it would be better if you didn't have to swap between display types.
To me, a tablet is something I want to use for reading, browsing the internet and annotating documents. So I am after a version that opens like a book and has 2 hi-res (min 1366 x 786) multi-touch screens and a battery life of over 12 hours and enough grunt to browse and watch video. The device must be capable of running multiple apps simulatenously. The screen should also be readable in sunlight. With the Pixel Qi screen and other technologies currently available I think this is achievable. So where is it?