I’ve some ideas about the improving of the air support: everyone knows that in the game there is an air support, it is formed of bombers that does a bombing run on the objective and go away; they also can be upgraded in the barracks, but only on the firepower. I think in the second game to change this thing.
The air support will be divided in three parts: bombers, fighters and gunships. All these supports will be upgradable in the barracks, like all the others units, but will no gain experience. The bombers will have no change, they will run over the enemy and destroy it, the fighters will be very similar to the bombers, but they will attack only the others air units (attack choppers, bombers, gunships, and support and transport choppers) preventing them to destroy our units or support the enemy ones, they will patrol the selected area for a précised amount of time. The gunships will be very big planes that fly around an area (also for a précised time) and attack with heavy machine guns every enemy that tries to cross that area. All these units will also be destroyed by land forces.


In the barracks:

The bombers will be upgraded in:
Speed
Anti-ground firepower
Armor

The fighters will be upgraded in:
Speed
Autonomy (to increase the time)
Anti-air firepower
Armor

The gunships will be upgraded in:
Autonomy (also to increase the time)
Armor
Anti-ground firepower