I´ve never really used it like that, but I still think it is the most underestimated part of DCSW. Surely it adds a lot of depth to ground battles when used as you describe, but in my eyes the biggest potential lies in additional players defending target zones. Imagine 1-3 players defending an airfield with CA, constantly repositioning and hiding units, convoys etc. so they don´t stand out like a bullseye, and a couple of MiG-21s taking off to intercept the incoming attackers...