The way i see it, is Windows has a variety of different manufacturers that make their products ( HP, Lenovo, Asus, Etc).They are completelty different as far their builds and sizes, but They all look the exact same once you turn on that screen. It will be no different than that. You will have devices running stock android but they will look different and be made by different manufactures. It will allow Google to open up their Android stores in Malls and other retail areas like Microsoft and Apple do or if the dont want that, they can have Android Silver stations in every carriers store. It will basically grow their brand and have people finally find out what stock android is.