The issue is with the laser range finder. Try it! When you find a lone con and you get into a fight, try taking the icons off before you start shooting. Your gunnery will not be "on the spot" as before because the laser rangefinder is what is actually determining how much lead you aim with, not the actual plane graphic
I didnt say more "realistic" , I said "immersive". Right now you can be in a 50 cal plane , see con at d800 in front of you, close in to d600'ish and start trying to get a shot. Now, 600 yard shots in WW2 weren't exactly run-of-the-mill firing range as they are in AH. If you've seen a plane like the FW190, those things are SMALL. Try hitting something the akin to the size of a mazda miata from 6 footbal fields away.
Alternatively, you could keep the icon but lose the rangefinder when it enters the circular area around the gunsight.