Super great poll. Sound adds so much to the environment. I can´t understand why some of the developers underestimate this part to any game/sim and do not develop this part. Sound have a great value to the overall experience, in what you are doing. And this is something you just know and irritates you when you hear it sounds wrong. As many of the videos there already have been uploaded illustrate, there is room for substantial improvement.
I have heard many good mods that have been made and that deserves a tribute. Unfortunately some multiplayer server do not allow to use of these good mods, for some reasons I do not know. Therefore, I think it would be great, if from official side began to create a new sound image that could match the sound that is in the real world.