Microsoft has researched exactly this in the past, and published a paper on the matter a few years ago with 3D-printed examples and mock-ups based around Xbox One controls (dug up by Windows Central).

That’s probably not what Microsoft wanted. Incidentally, none of these Start concepts indicate anything about being able to resize or move the Start menu.

While Microsoft’s “Metro” design is unified across Windows, Windows Phone, and Xbox, there was a time when the company was creating concepts for its big mobile refresh. In a new modern ...

The Windows 9 concepts all use a Start button, something that was complained about so much with Windows 8, that Microsoft was forced to provide a Start button in Windows 8.1.

Microsoft has created multiple dual-screen pocketable Surface device concepts over the years as the company looks to the future of mobile devices ...