The current zigzag would be set to Routing Width field thickness, and a new symbol, which is easy to add as there's a spare space anyway in the PCB Tools Window, would look like a thicker zigzag and would have a new field "Thick Routing" in the Other settings.
But move the Image symbol down and shuffle Pad through Hole right so the two routing symbols would be next to each other in the PCB Tools window.
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
