so you can set up two taskbars for example, where one displays all normal windows, and one shows only minimized windows. i used sth like that in my fvwm setup and i think it would be a nice addition. the "icon box" plugin can show only minimized apps, but i like the view of the taskbar better.

perhaps a combobox "show window type" with the options "only minimized windows", "no minimized windows" and "all windows" in the taskbar plugin preferences.