unleash the desktop "app" potential

hi there

i was just thinking about something and thought i should get the tribes point of view

so win8 is created to run on all devices, tabs notebooks and pcs

yet i see that its a failaure in that area, how i see the perfect win8 device,

its a tab with win RT with its desktop app -> when you plug it into a keyboard youll have extra battery, more powerfull cpu taking charge and more importantly a new desktop with all your x86 apps on it

moving on you go home and you have your entire rig, you dock the tablet on the case and the new cpu takes charge, loads the powerfull gpu along with a new desktop app that have all your games and video editing software installed and ready to go

i hope you got what i mean, if the desktop is an app, why dont we leverage that ?