Showing structures on map

Currently you can toggle on/off whether the map displays military units, resources, etc. It would be very helpful to have on/off toggles to display structures on the map. For example, if I want to find provinces where I can produce a light tank, I could toggle on the industrial complex & infrastructure button and then either see symbols representing these or province colors representing those that match this combination. Some structures are visible now but others are not, and particularly highlighting the provinces in some way would be good.