1st additional crewman - increases reload speed, just like in AT guns, maybe quicker cooldown of the gun but that’s pure fantasy
2nd additional crewman - is equipped with rangefinder or binoculars (even if you don’t have them in your inventory) and adds kind of a primitive “radar” at the bottom of the screen that shows the bearing of enemy aricraft (to symulate spoting), maybe also increases the range of the marker
Additionally full crew may allow to move the AA gun. May be usefull if we remove vertical aim restrictions one day.
Ps.
I propose this not because of balance but because it looks cool.
I’m mostly behind it, but I think that the current AA guns need to be switched out for a separation between Autocannons and AA guns.
The Autocannons would be a wheeled version of the AA we have now (like a cross of the AT field guns movement and rotation with the current AA gun) that would be able to angle down and have AP and HE shells. Though it would no longer be 360 degree rotation.
Meanwhile, larger AA guns (like flak cannons) would be implemented as well. These would be restricted to aiming upwards, but have longer range and much higher effectiveness against aircraft, though much slower reload, UNLESS you have a full crew on it, like you are suggesting here.
