I made this idea once and it was rejected, My apologize for lack of information.
I think it's more optimal if these rank 10 aircrafts have a cooldown for the cops; So they'll have to wait before getting another one when its destroyed or something, So an officer can no longer rule the city from above all the time.
[Repost] Cooldown for Rustler and Sparrow.
Pretty sure I am repeating myself on this one (as usual) but Army will be added at some point then it won't matter.
Well..... Maybe...