Mimicking GNOME 2
Many users prefer the look and feel of GNOME 2 better than GNOME 3. Thankfully, a fellow by the name of Ron Yorston already created an extension pack that essentially transforms GNOME 3 into a logical upgrade of GNOME 2, instead of the complete departure that GNOME Shell is by default.
The extensions are available as an RPM download. At the time of writing, his pack includes six extensions: the Applications Menu extension we already covered and five new extensions:
The Bottom Panel extension resurrects the GNOME 2 bottom panel, complete with window list and workspace switcher.
The Move Clock extension returns the clock to the right side of the upper panel, among the other indicators.
The Panel Favorites extension adds quick-launcher icons from the Dash section of the Overview to the upper panel, between the Activities button and the foreground application's icon/name.
Shut Down Menu
The Shut Down Menu extension changes the Suspend entry in the User menu to Shut Down.
When you click Shut Down, you're given all of the relevant options: Suspend, Hibernate, Restart, Cancel, and Power Off.
The Static Workspaces extension disables the new dynamic workspaces in favor of the old-school user-configurable number of virtual desktops.
Once all of those extensions are enabled, you end up with a desktop like this:
While Ron's pack does most of the heavy lifting, there are a few more tweaks that get you even closer to the classic GNOME 2 experience. First, enable the AlternateTab, Auto Move Windows, and Places Status Indicator extensions from the previous page. Then, enable Have file manager handle the desktop, along with any of the icons you want to appear on the Desktop page of the GNOME Tweak Tool. Finally, bring back the minimize and maximize buttons by changing the Arrangement of buttons on the titlebar to All on the Shell page of the GNOME Tweak Tool.
Now you should have something that looks like this:
Although this is not a carbon copy replica of GNOME 2, the differences are minor compared to GNOME 3's default, or even XFCE.