I borrow this functionality from company of heroes.
Instead of a fixed position let one man carry the heavy machine gun. If he is shot it will be placed near the place of death.
It need time to set up.
It has more ammo than the standard machine gun.
It should be placeable in builsings
It has somewhat more penetration than the machinegun.
So why would you want to have a heavy machinegun?
Well it might not be as lucrative for germany or the US. But the soviets and british have a lack of good machineguns.
That way it could act somewhat as a substitude.
There should be a teamlimit of course.
