Replace default "Show Desktop" widget in panel with "Minimize All"
Most people, especially the ones coming from Windows (like LTT), expect the button in the corner of the panel to minimize all windows instead of just showing the desktop for a while (which isn't even that useful as there are no default desktop icons or widgets). When they click on a window in the task manager or open a new one all of their windows show back up, which is annoying if you wanted to minimize all windows to clean up your cluttered workspace.