Technically it wouldn't be a Surface RT because it would run full-fat Windows 8. But basically something with the performance, battery life, size and weight of a Surface RT but running on an Atom CPU. Then you could simply differentiate between the Surface LT (Light) and the high-performance, shorter battery life Surface Pro. I would do that. It would totally sell. You'd get the app ecosystem to follow suit, and over time publishers would gradually move from Win32 to the more touch-friendly WinRT framework anyway, but you wouldn't sacrifice legacy compatibility. Then I'd focus on merging Windows RT with WP8 --which eventually would bridge to Windows 8 when x68 has caught up sufficiently in the smartphone market.