Your reasoning doesn't make sense. You claim that GNOME 2 is not dead upstream because there is a fork but the presence of the fork doesn't say anything about GNOME 2 itself and the fork didn't exist when Fedora switched to GNOME 3. GNOME 3 is certainly an upgrade to GNOME 2 in the same way that KDE 4 is an upgrade to KDE 3 and Fedora 18 installer is an upgrade to Fedora 17 installer. You might not like that upgrade but arguing that they shouldn't be considered an upgrade despite sharing a lot of the same components and put up by the same project is just silly. There was a GNOME 3 feature proposal btw which was accepted by Fedora engineering steering committee.
If you want to propose a switch by default to Clang, it will go through the same feature proposal as Cinnamon and must have a very robust rationale for doing so. So I am afraid I don't see your point at all. Nobody is using any force to make you install Fedora or even if you chose Fedora to force you to install GNOME.
As we move forward, we continue to make more choices available and in fact, one of the accepted features for Fedora 19 is to bring in Enlightenment 17. I am working on that.