Have you noticed that the only pilot that can use recon planes are rookie pilots and the only promotions for rookie pilots are fighter and bomber pilots. I think there should be a recon pilot career line that improves the speed, fuel time and visual range of the scout planes. The first recon promotion is the scout pilot around lvl 35. around lvl 55 the scout pilot can be specailised for a choice between 3 jobs Recon Pilot (greatly increases speed and sight range but prevent the plane to attack), Fighter-recon (greatly improves attack but with sight range. gives most recon planes pefromance of tier 1 fighters. the IJN A6M2-N Type 2 would have tier 2 fighter performance, while the tier 5 recon planes would be between tier 2 and tier 3 fighters)) and ASW (gets the choice drop either sonar bouys (which is like a mix between mines and flare bombs. For a certain amount of time the sonar bouy would reveal any submerged enemy sub within a certain radius of the bouy.) or depth charges (to make it fair for submarine aircraft dropped depth charges would be slighty weaker than ship mounted depth charges)
The promotions would go

lvl 35 Scout Pilot
lvl 55 Recon Pilot, Recon-Fighter Pilot, ASW pilot
lvl 70 Veteran Recon Pilot, Recon-Fighte ACE, Veteran ASW Pilot