I would like to be able to do damage to ground transport, ie, trucks and locomotives with MGs. You can take out a field gun or a pile of supplies with your MG but can do nothing to ground transport with anything except a bomb, no matter how many rounds you pump into them. It would seem that you could, at least, damage a truck enough to make it stop, same with a locomotive and there is bound to be ammunition in either a box car or a truck sometime that would cause it to go up from the tracers.