Here are a few more things to improve on;
1) On the German side with the submarine, only 2 bombs count if you throw 4. Changed planes with 3 bombs and there he gives only 1 bomb that hits.
2) If you are in the bomber you are piloting you can only bomb 4 hangars. If you turn back to the other four, he will no longer release his bombs. If you crash and fly back, the pilot's bombs and gun will no longer work.
I suppose this is only on Steam as I've seen other people bomb all 8.
3) The image is still a bit jittery and makes it difficult to aim. Even when you take a turn, the image sometimes lingers.