I do love that all of the displays of this still show 4 icons at the bottom.
For me, a tablet must:
1. Have a stylus. I haven't used my fingers to draw stuff since I lived in a cave, back around 200,000 years ago. The pen/stylus is one of those inventions that has stood the test of time. Even those "sign with your finger as a pen" POS terminals are obtuse.
2. Have a better OS, like OS X. I don't want to be playing around with a 12" iPhone.
3. Allow a mouse/trackpad. When drawing with a CAD program, that whole "hand" thing gets in the way while I am drawing.
4. Allow windows. To me, a single/dual app model is like working in a book, where only one/two pages can be displayed. Having multiple windows is the way to do it, so I can collect ideas from all over, and arrange them my way. Not that my way is the best for you, but it is the best for me.