I do agree with all of the comments below, we need a way to adjust the size of the touch Keyboard !!!
I just bought an incredible touch Screen a Dell S2340T It's of course a 23 inch Screen that you can move into any position, I connected my new Surface Pro II to it and finally decided to forget about the physical keyboard and mouse and try only the touch screen.
Well my surprise is that I am not able to write on it, the Keyboard is so big that I needed to move my fingers around my big screen which caused making mistakes 90% of the time. Even if I split the screen to reduce the size of my app the keyboard is not reduced.
Unfortunately as much as I love my new touch screen and my Surface Pro II I had to connect the USB keyboard and mouse back.
Disappointed... Yes, probably a physical keyboard with a touch pad and my old screen might work better than my touch screen.
Let's hope Microsoft consider this change into future Windows 8 Service Packs or versions.
Jorge.