Anti air firing mechanism

Good day gentlemen!

As I was chatting and looking at different statistics of the current units and buildings I saw that the aa only works if it is directly attacked.

That way of defending the air isn't the greatest idea. So I thought about writing another suggestion to our developers, so here's my suggestion:

The AA should have a delimited space, which would increase with rank, where it would fire at the enemy air and it should have a posibility of fire control similar to the one of the naval units.

Fire control settings:

Self-defense : only when it get's attacked.

Aggressive : any time an air unit of unknown hostility comes within firing range it will get attacked

Defensive : when an air unit of unknown hostility comes over your (capturated/owned) land it gets attacked

Under command : it will fire only if it is instructed to do so

You can suggest any addition to my suggestion which will be then looked over by the developers who would green light it or not for implementation

Thank you for your time!

Best regards