Add "SideBar" option on Panel Preferences window.
Add "SideBar" option to "Mode:" that is located under the General section, on the "Panel Preferences" window. This option would create a vertical panel on the right or left side of the screen that would only have App icons instead of App icons and App name text. The side bar should not overlap the top panel bar. Some people prefer a side bar because on widescreens, there is more space horizontally than there is vertically.