There is room for improvement. ++1 Not everyone has the same equipment, same settings, or same eyesight.

Whatever your personal experience with the game is, does not change other's. Definitely, certain gunsight masks are the problem. But there are also many other concerns ranging from icons drawing eyes away from target, to red / green color blindness, to monitor size and FOV settings.
Personally, I would argue that easier identification of close targets would reduce the need for wider FOV settings and would double down and improve immersion.
I have read two separate wishes that combined with my personal wish to
initiate through the existing target lock, would not interfere with anyone who isn't using the target lock (only the player needing the additional assistance) view.
One wish was to make a highlight of the aircraft at close range. Another, was more of a real world observation that 2D representation lacks the corresponding shadowing to accurately reflect the 3D shape. Combine the 2 observations and instead of highlight, switch to a more powerful detail of the selected aircraft (somewhat like other player's skins have the ability to be seen or not).
* Hopefully this could be accomplished by +/- power of one or the other of the plane skin's layers.