Currently Kestrels easily wipe out entire bases unless you spam flak cannons near every possible building, you either have to do this or have more peregines than your enemy. If we gave anti air units and towers more range this would solve this issue and make Kestrels unable to out-range all your AA and make the AA towers actually helpful rather than just spamming stingers and have them patrol around your base.
I would like having T1 missile towers have greater range than flak to keep them more even. Gives T1 AA more of a purpose later in the game even though its does less damage.