Some people I talked to were disappointed in the lack of a taskbar in GNOME 3. While I’ve gotten used to it, it’s easy enough to get a taskbar back.
Tint2 is a project that I was using for a taskbar when I was strictly using OpenBox.
I was surprised to find that it works perfectly with GNOME3 – it even respects the bar on snapping windows to the sides and maximizing.
There’s no autostart applications icon, but the Arch Wiki has a workaround so you can start tint2 automatically.