For example, Tom's Hardware "GNOME 3: Why It Failed":
Easy for new Linux-users, people coming from Windows or Mac? Considering that GNOME Shell is one of the most alien GUIs we've ever seen, none of that is likely.
New users are typically converted by a friend or family member who gets them set up and interested.
By gutting GNOME of every power user-oriented feature [...] The power user demographic isn't going to recommend and support GNOME 3-based systems if they've already jumped ship.
What makes all of this worse is the way GNOME dismisses the complaints, chalking it up to the fact that people don't like change and that its users will acclimate. Fair enough. Except they won't get used to it.
If GNOME doesn't wake up soon, the GNOME Shell may prove cataclysmic for the entire project.
Regardless of the potential, if you “upgrade” to GNOME 3 you will almost certainly lose any semblance of work flow.
Normal folks should definitely skip this one. Don't even bother with the rental.
So, yeah, just give up.
Drop the GNOME 3 and GNOME Shell names ASAP, which are damaged beyond repair, and quickly move to release a GNOME 4 that fully works like GNOME 2 by default and with full support, and allows to opt-in to any new features in a modular fashion.