How about this?
For Battlefild Interdiction doctrine (ID 9100) change
For Infiltration Bombardement (ID=9360), Carousel Bombardement (ID=9370) and Keypoint Bombardement (ID=9380) change
For Theater Operation (ID=17010) change
For Blitzkrieg (ID=6260) and Deep Operatiopns (ID=6330) change
This would give you an initial penalty of 45%. Each of the four mentioned air doctrines reduces this penalty by 10% to a 5% penalty. Either of the two land doctrines will erase the final 5% (Blitzkrieg is part of Spearhead, Deep Operations is part of Human Wave, so you can only get one of them).
It's not great, I know, but it should work.
For Battlefild Interdiction doctrine (ID 9100) change
Code:
command = { type = task_efficiency which = airborne_assault value = 0.3 } to
command = { type = task_efficiency which = airborne_assault value = [color=red]0.2[/color] }
For Infiltration Bombardement (ID=9360), Carousel Bombardement (ID=9370) and Keypoint Bombardement (ID=9380) change
Code:
command = { type = task_efficiency which = airborne_assault value = 0.1 } to
command = { type = task_efficiency which = airborne_assault value = [color=red]-0.1[/color] }
For Theater Operation (ID=17010) change
Code:
command = { type = task_efficiency which = airborne_assault value = 0.3 } to
command = { type = task_efficiency which = airborne_assault value = [color=red]-0.1[/color] }
For Blitzkrieg (ID=6260) and Deep Operatiopns (ID=6330) change
Code:
command = { type = task_efficiency which = airborne_assault value = 0.2 } to
command = { type = task_efficiency which = airborne_assault value = [color=red]-0.05[/color] }
This would give you an initial penalty of 45%. Each of the four mentioned air doctrines reduces this penalty by 10% to a 5% penalty. Either of the two land doctrines will erase the final 5% (Blitzkrieg is part of Spearhead, Deep Operations is part of Human Wave, so you can only get one of them).
It's not great, I know, but it should work.