When flying helicopters, the 3rd person perspective (3PP) angle is far too high. The problem with the current 3PP viewing angle is that it does not allow the pilot to properly see the direction of travel. And moving the angle manually does not persist (it returns to the default when the key is let go).
The default 3PP view should be more behind the helicopter looking in the direction of flight (more like the default on Arma 3).
Additionally, player setting the direction of the 3PP view should be the same as for ground vehicles were the viewing angle stays were the player puts it, rather than returning to the default 3PP. A keybind could be made to have the viewing angle return to the default 3PP view angle behind the helicopter