Installation 2/5 - I don't have the latest and greatest computer, but it still shouldn't have taken me 2 hours to install it. This is excluding the download time.
Compatibility 3/5 - It removed my Catalyst control center and a few programs I use for work. I was particularly miffed that the VPN software I use to connect to clients was gone.
Features 3/5 - Start button is rather useless, it's faster to use Win + X for the context menu or the windows button for the start screen. I can see how it'd be helpful for those who don't use keyboard shortcuts though. Right-clicking on a network from the sidebar no longer does anything. I have to dig to find the connection properties. The search is better though, that's a huge plus.