overall I think Gnome 3 is a big improvement to Gnome 2, but some things I don't really like:
  • pulseaudio dependency
  • it seems extension maintainer have a bit much hassle to support recent GTK 3 version; maybe to much changes between GTK 3.x versions
  • in Gnome 3.6 apps like Gnote and Liferea lost its icon in the state bar; now it is not even possible to close Liferea properly without taskmanager or kill command
  • Nautilus should order by type again or if not it should at least remember the last order choice