So, i think seeing the Ma Deus in this game would be a nice addition. Seeing as it is one of the greatest implements of warfare ever(ill die on this hill). Granted the tricky part would be how it would be implemented, ive thought about this and using it as a static buildable like the AT gun would be acceptable. Id also say given its a .50 that it should have penetrative ability through lots of material (wood fences, wood walls, thin rock walls), but thats up for debate for game purposes.
I speak from experience when i say having it deployable as non static of any kind would be unrealistic, everything about that weapon is heavy, the exception being mounted on vehicles.
Now my reasoning for it not being a man portable weapon, while obvious to some isn’t to others. The weapon would need to be broken down to 4 parts for adequate transportation, the gun, barrels, tripod, and ammo. Thats 4 people carrying it at minimum.
Now my example of translating this to game could be, make a gunner loadout for the mg class, and function like AT gunner. It would have to be constructed with supplies and built. Then each belt reloaded the same as the AT gun, or limited reloads that need a support ammo box nearby.
Balancing would have to be emphasizing this weapons large caliber, it doesn’t fire as fast as the Germans MGs or the .30cal but what it lacks in fire rate it should make up in ensuring maximum suppression and elimination.