Allows a user to differentiate between other items on the map. The user would have the option when creating the custom form in the UI forms designer to assign an icon to it.
UPDATE: support for the Custom forms icons has been added to Maps, we are planning on adding this support to the model in the 1st half of 2023
This would be extremely useful on the projects we are working on. All other similar software already provide this functionality in some way shape or form.