What is your love affair with overpowering planes.
So just in case they weren't powerful enough you gave them fire bombs!
At least double up on the AA emplacements to give the infantry some chance.
In addition they should not re-spawn so quickly
Lastly, no repair or rearm in mid-air, make them land, so at least it slows them down a bit
Honestly, pilots are getting 2 to 3 times the kills of any other player on the field
It is in desperate need of a re-balance