Currently when I build an air unit I'm am building the actual aircraft + pilots + ground crew + the various support facilities required. On top of this I spend generic manpower points. The problem is that this over simplifies the pilots component while under-counting the total personnel required. (It's only 1 manpower point for a fighter unit) Pilot training is very specialized and dedicated schools were set up to train air crew. The loss of experienced air crew could not quickly be replaced. Significant numbers of German air crew were lost over England both killed and captured and this hindered the German airforce more than the loss of aircraft. Late in the war there were thousands of German fighter aircraft built but not flown because of shortages of pilots and fuel. French aircraft manufacturers built hundreds of aircraft up to May 1940 that were never flown. It seems the build cost for aircraft should be a bit lower and pilot/aircrew training added to create a separate pool. Air losses over enemy territory would reduce the pilot pool more than losses over friendly territory. More generic manpower should be required to fill the non air crew roles in an airforce. Late in the war thousands of German groundcrew were conscripted into ground units (the over-equiped but poorly trained Luftwaffe Divisions) to replace losses on the eastern front.
So:
1. Add air training schools by allowing pilot training. Implement similarly to the convoy construction option.
2. Each air unit would require 1 pilot point. A pilot point mans an air unit at 100% readiness.
3. An air unit reduced to 50% aircraft after combat over enemy/sea territory would lose, say, 40% of the pilots (allowing for stragglers returning by various means)
4. An air unit reduced to 50% aircraft after combat over friendly territory would lose, say, 15% of the pilots.
5. Air unit construction costs are reduced slightly.
6. Air units are created by building individual aircraft into a pool which is reduced when the air unit is activated. similar to the new clues about tank production. Each air unit uses 100 aircraft to be full strength.
7. An air unit also requires 4 generic manpower points which is recovered if the air unit is disbanded. It is not lost by air combat. It is lost if the air unit is overrun on the ground by land units. It would need to be replaced before the air unit is functional again. The generic manpower suffers attrition normally.
8. The efficiency of air crew training would be a research item. This then allows the huge efforts done by the USA to man their air fleets to be modeled better.
Specialist training could be extended to naval and tank crew but air crew is the most important.
So:
1. Add air training schools by allowing pilot training. Implement similarly to the convoy construction option.
2. Each air unit would require 1 pilot point. A pilot point mans an air unit at 100% readiness.
3. An air unit reduced to 50% aircraft after combat over enemy/sea territory would lose, say, 40% of the pilots (allowing for stragglers returning by various means)
4. An air unit reduced to 50% aircraft after combat over friendly territory would lose, say, 15% of the pilots.
5. Air unit construction costs are reduced slightly.
6. Air units are created by building individual aircraft into a pool which is reduced when the air unit is activated. similar to the new clues about tank production. Each air unit uses 100 aircraft to be full strength.
7. An air unit also requires 4 generic manpower points which is recovered if the air unit is disbanded. It is not lost by air combat. It is lost if the air unit is overrun on the ground by land units. It would need to be replaced before the air unit is functional again. The generic manpower suffers attrition normally.
8. The efficiency of air crew training would be a research item. This then allows the huge efforts done by the USA to man their air fleets to be modeled better.
Specialist training could be extended to naval and tank crew but air crew is the most important.