Or maybe a full-sized touch 'interface' where the entire keyboard used to be. Imagine if the entire bottom half of the laptop was one of those touch-pads with some kind of haptic feedback. You could dynamically have mouse, keyboard, contextually customized input the entire mirror of the screen itself. Input below, output above. A curious concept. If this little touch panel merged with the trackpad (a better placement for it in my mind), you'd have a pretty powerful input system.
If done properly, I fully expect that kind of input idea to be inevitable. If done poorly, it's a total failure and prevents any work from being done. In order to bridge that gap it seems Apple is starting small.
