Really? I've never heard anything but non-intuitive ramblings from UI design people. None of them seem to ever actually use computers. Rather, they dream up use cases based on contrived scenarios. I want one thing: The icon is where it was yesterday. Gnome, unity all the others have one job: Let me launch the program I need and get the F out of my way. UI stability is why I years ago abandoned the chaos of Ubuntu for the stability of Mint.
Windows XP got it right. Start button->office->word. Start button -> Email. Most everything after that is fluff.