It would be very nice and more immersive if for example tank soldiers would talk louder, and would say “Loading AP” or “Tank destroyed” or “Forward” or “Right” or “Left” or “Reverse”
Translate these into German and Russian, and make these voices louder in tanks. Would help in minimalist HUD too
They used to have soldier lines for loading AP and HE, but they decided to remove it
Further, the sound should be processed (more dull? Radio noise?) To conform to the sense structure inside the tank
They had it like this, also used to have it when you have engine fire, but for some reason they decided to remove all these voice lines.