So it looks like the reviews are mixed for Gnome3, and the major other advances are in either things like virtualization services, or systemd. I think sitting out this release makes sense for me - I expect Gnome3 will be more stable by the time FC16 comes around.
As I said earlier, I don’t use Gnome, so that’s a non-issue for me. However, I’m quite interested in seeing the capabilities of systemd. So far, it’s seemed that the machine boots up faster, but this is a brand new machine, so I can’t tell if it’s systemd or the machine. :)