This whole perk system is whacked.
I don't see any way for this system to be corrected to make the game "balanced".
I think the better way to go is a supply and demand system.
Every country get's 60 of each type of unit (plane/bomber/GV). And each unit has an associated factory which produces 10 an hour.
Every sortie takes from the unit count, every successfull landing adds back to the count.
Obviously, ditches and shot downs don't add back to the count.
Kill the factory and unit production stops for X amount of time.
optional: Kill all fighter hangers at a base and 1 of each unit type that can sortie from that hanger is immediately destroyed.
This system would add more strategy to the over all game.
As the tour goes along - the late war planes may get more and more rare and folks will be need to fly a variety of planes.
Bombers and mission planners will have more options for their strikes.
This system could be extended to ammo, fuel, and troops, but on a base by base count.
Example, if each fuel tank at a base holds 10,000 gallons of fuel (I know this number is small - just an example). 4 tanks at a base, total of 40,000 gallons. With a hidden emergency reserve of 10,000 (that can't be destroyed).
10 Planes sortie with 2,000 gallons each, base is down to 20,000 in tanks and 10,000 hidden reserve. Enemy destroys 2 Fuel tanks, base is down to emergency reserves 10,000. 10 planes try to sortie with 2,000 gallons, but only 5 are able to launch. Base is out of fuel no more planes or GVs can sortie.
At the scheduled fuel delivery time (every 30 minutes) 20,000 gallons of fuel arrive, planes can sortie.
Of course if the refinery is destroyed, fuel will not be delivered every 30 minutes or not as much will be delivered.
Nexus