Your suicide tatic scare me Otto.
IIRC there is a distinct noise each building makes but tbh I dont hear them when I go over the enemies base. Some ppl say you can "hear metal clanging" but I dont hear jack squat
I like your air superiority idea. Very unique. One thing I would suggest is making the cool down very long and increasing the cost to 85 munitions. That should balance it out I guess.