Is your feature request related to a problem? Please describe.
When having multiple windows open in many workspaces, it is difficult to know from the workspace-switcher applet, which workspace is the one that contains the window I want to access.
Describe the solution you'd like
A solution could be to have an option in the config to display the window's icon in the center of its respective frame representation in the applet, something like the XFCE4 workspaces applet.
Describe alternatives you've considered
I currently navigate through all workspaces until I find the workspace that contains the window.