It is an interesting idea and something other
phone OSs have done by doing things like preloading an screenshot of the app to make it look like the app loads faster... The phone still does just hang every once in awhile but there is no hourglass to be found unless you are installing an app.
Not exact matches
When it comes to mobile
OSs, it's usually personal, so if you love Windows
Phone, you're sure to enjoy how it looks on the M8.