M: "Hey everyone, here's something new that is perfect for a modern use case!"
C: "Eww! It's different. This sucks! I'm sticking with Android/Apple/Windows 7"
M: "Hey everyone, we added some half-thought-out mouse interaction to the new stuff!"
C: "Meh, there aren't any good apps in the store. I'll stick with Android/Apple/Windows 7"
M: "Hey everyone, we took out all the new bits so now it's just Windows 7.1!"
C: "What, you're still here?"
Come on Microsoft, be firm on something. People take time to adapt to new stuff. The users who hate the start screen can buy Stardock. The users who like the start screen are going to hate Windows 9.