It seems not so real as it must seems.
Sometimes the windshield could become so dirt that a pilot could land only watching side by side from his cockpit

And last but not least, since in AH2 the normal firing distance is close to 200 yards I think we could hear the sounds of our fire hitting the enemy fuselage from this distance or closer expecially when our fire makes to explode the enemy plane (actually we can only see the explosion without any sound emission). In WB, I remember to hear also the ground explosions even if far away from the battlefields and more when we hit a plane we usually don't see any little pieces detaching from it, we can only see med/large pieces flying away and usually they don't cause any damage to us when we accidentally hit those pieces with our planes.

What above could be a better realism (remembering in this simulation we've not all the SA and feedback a real pilot could have in his real bird).
I could continue with: Exaust flames at night time flying, contrails, crews in bombers, SAR missions in seaplanes, submarines missions, counter submarine war, and.......lots of interesting things but this will be occasion for other topics if you tell me this could be interesting.