I'm not turning away because Desktop Cube doesn't work, I'm turning away because it completely messed up my system by simply trying to turn it on, through the GUI.
I wasn't messing with my X configuration or any other insanities. I clicked a button in the settings, and had to Google around just to get back to a working computer.
What other landmines are waiting for me? What if I install KDevelop or some other KDE-based program? Will that cause everything to break too? I don't know, but I never before had to be afraid to just try things. Now I have to worry if whatever I'm doing is "Canonical-approved," and I'm not okay with that.
(I really doubt KDE is going to cause a problem, it was just an example.)
For the record, I played with Gnome 3 a little more, and I'm willing to give it a longer chance. Avant Window Navigator is a must, though.
Overall, it just seems like Gnome 3 and Unity have all of my least favorite parts of OS X jammed into it for no good reason.