Both of these are important steps, to be sure. But they both miss the crucial flaw in the Surface design – its lack of a firm hinge. To use the Surface and keyboard on the move, the kickstand has to be deployed, and that increases the overall horizontal length needed to use the device. http://regmedia.co.uk/2014/05/20/surface_pro_3_lap.jpg
Panay demonstrated this weakness inadvertently during his demo. He's of average build and put the Pro 3 on his knees; it fitted, but with the side effect of sticking the trackpad into his stomach – typing was possible but hardly comfortable. Nevertheless, he said he was confident the design worked.