These experiments rarely last very long, and almost always end because the video/graphics support is just so terrible. I have yet to find a reliable way to play videos without horrible screen tearing.
But I don't know what alternative there is. Windows' experiments with Metro was a disaster. PC-BSD has some really nice features (I love ZFS and use it on my fileserver) but has the same issues with hardware support, especially graphics hardware support.
I fear for the future.