It's a really interesting idea, but I suspect it will fail - The market is too ingrained in the idea of "apps" to do anything else.

When it first came out, Windows Phone had one of the most interesting UIs out there. It combined all of your social networks into one single messaging hub, had a novel concept in tiles and the sliding panes (or whatever they were called). Unfortunately, every app maker wanted to more or less port what they were already doing on Android/iOS to Windows Phone, so few ever used the functionality MS provided. As of Windows Phone 10, it all seems to be gone.