In order to preserve the element of capture the flag due to low numbers I suggest removing the m3 while it has supplies or troops from the GV dar system.
Could code it to where anything that rolls out with ammunition triggers the game to show a dar when it spawns from the hanger or spawn point.
You still have to wf and/or deack a base. On top of that at any given point a defender can up and defend.
I think the game is so full of sharks that if you watch the map and know how to read it over the span of just 5 minutes in unision with the dot command system and showing down times it's a little op to reveal the location of troops to such a degree as to reveal its location.
Just a thought not an expectation.