NEEDED: Portal Vehicle Crosshairs Setting

There should be an individual option to toggle vehicle crosshairs in Portal, separate from foot soldier crosshairs and HUD. I would like to turn off soldier crosshairs and HUD, but doing so removes the crosshairs on vehicle systems. 

For example, the attack helicopter does not have a rocket aiming reticle. The electronic gunner sights on armored vehicles do not have crosshairs. Tank turrets, IFV guns, and secondary gunner machine guns can't be aimed in first person because the aiming reticles are missing.

Turning off the vehicle aiming reticles doesn't make sense, this would be like removing the crosshairs on a sniper scope.