I still think it's odd how the world rejects the big visual start screen that is Metro (even on mouse and keyboard).
I mean, on Wii, I had a grid of icons too, and a pointer that works similar to a mouse. It worked great. Never once did I think, "you know what I'd rather use to launch a channel than this full screen grid of pictures? A little icon in the bottom left corner that I can click on and have a tiny text list of channels".
The preference for the start button and classic start menu is utterly baffling to me.