what about completely disabling shooting from prone position while you move? Crawling animation is really nice but when you press "fire"it looks odd, becasue your weapon jumps from shooting position to crawling animation with every single bullet and it works like beeing always ready to fire what is not true (check it with deployed Bren).
would be nice to not be able to shoot while you go prone for 1sec or something and while moving in prone position to force soldiers to stop and aim. I've been killed few times in the situation when someone was crawling behind some cover (not laying and waiting there for his prey! it's completely different situation) and I suddenly run in front of him, he shoot immedately, get lucky kill in 0.1sec and keep moving as if nothing had happened what is impossible, in reality he would be dead before he reached the trigger...
Also I wish this could affect EVERY SINGLE WEAPONS not only MGs. It's just unrealistic now....
now hit me in the face with "it's impossible due game engine"