The real challenge with the C1 user interface is that when running on a tablet like a surface pro the UI elements are pretty small. It would be nice if the UI had a mode where controls were stubby finger sized vs standard workstation size for use with a mouse etc. They are tough to hit with a pen when in the field using a tablet PC connected tethered.
I set up a 'Tethered for focus/composition review' workspace myself with a SP3 but the resolution of the screen actually hurts the usability of the UI with a pen. No problem with the functionality being missing, just the ability (for the hamfisted amongst us with older eyes) to hit the right icons.