I still believe the overall vision is/was good. They just would have had to make a few more compromises, like some additional optimizations for desktop where users could profit more from mouse and keybaord.

But another factor was that the change was just to deep of a cut, and the world was just not ready for it. People were overwhelmed when they were expected to suddenly use magic corners and gestures instead of clicking a button. If it would have been a slower change, it might have worked out better.