Until Microsoft get rid of Metro, and touchscreen bias for desktops, and give us back the proper desktop and start menu, they O/S will be a failure.
How is Metro a problem? With the new start screen, you can choose to see only the apps you use most often and unpin the rest, making choosing apps a lot easier. In a corporate environment where the IT preferably wants users not to poke around apps they don't have any use for, they can unpin them, keep the apps that are used on the screen, a lot cleaner, and efficient way to present apps.
The problem, if MS dumps Metro now, is that it will kill itself in the long run.
MS is taking a new direction, computing has taken a turn, and bets have been placed. The future is being able to sync/use apps using the same interface on mobiles, tablets, TVs, laptops, computers, and whatever comes in the future. All using an interface that looks the same, and apps that work universally, and are able to sync settings and files. That is the future, this is what I think.