If MS wants to sell small, low-cost Win x86/RT tablets by bundling Office on them, it needs to demonstrate one unique use-case which any potential buyer will instantly ‘get’:
1. Remove tablet from pocket/satchel/purse and place on desk next to a bluetooth keyboard and 20″ HDMI monitor.
2. Plug in the monitor and hit any key on the keyboard.
3. Tablet automatically turns itself into a multi-touch trackpad and a familiar Office UI pops up on the monitor. Presto: instant ‘Office workstation’; no need for klunky beige box.
4. Profit.
Not only would this be a eye-catching trick that no iOS or Android device can do, it’d also turn Office’s biggest failing – that its current UI utterly sucks on touch into an actual selling point, since ‘existing Office UI’ means ‘no retraining required’.