First of all, this is not casting shade, I love your games deep down in my RTS heart. That said....
In a multi game... when On-map mortar teams fire off, even without being spotted, you can find their approximate location by scrolling around the map and listening for their tubes launching. This gives an opponent (me, in this case) an opportunity to call in an arty strike on their position, when I really should have no idea where they are firing from.
Anyone agree?