Having lost my hearing on the left side suddenly I now realise how dependant I was on hearing what direction sounds come from. Nowadays all sound comes from the right side and it is seriously difficult to locate an enemy in a fight. If I’m in combat I often have to take the hits to try to see where the shots come from. If I’m trying to find that distant tank I can hear I have to run in one direction to hear if the sound gets louder or fainter and by trial and error try to home in on where it is.
My suggestion would be an optional sound indicator that shows sounds from machines as an overlay. It could be transparent arrows or dots around the edges of the screen. Proximity could be indicated by arrow or dot size.