Don't fix what isn't broken
"GNOME 3 is a major departure from the existing interface: it cleans up the interface and makes it easier to find and fire up applications through juicy new icons."
I'm not so sure about that myself... have been playing with it on archlinux since the release. The application menu is pretty terrible, it takes up the whole screen for crying out loud. Unless you're visually impaired i don't see how throwing 250x250px icons all over the desktop is ever going to increase productivity.