Well, let's wait a few releases to see what other features (including perhaps static 2D workspaces, or other things which I depend upon) either disappear capriciously, or fail because extensions are considered 2nd class citizens that can break at any time when changes to GNOME's "core vision" are made.
The problem is that the GNOME developers have a very bad reputation about not caring about preserving their existing userbase's usage patterns, and instead of developed Steve Jobs arrogance of trying to tell me that "I'm using it wrong". I haven't seen any evidence they've repented of their arrogance. Until then, why should I risk my productivity?
Better to try to encourage more people to use the competition such as XFCE, and make it be a better desktop environment than GNOME 2.x ever was (and certainly better than GNOME 3.x is by my lights).