I think this is one of the VERY FEW areas that COD WW2 beats Battlefield. I have a blast with the stationary MG42s and tank turrets on that game. Especially when playing War on the Normandy map. A player on a stationary weapon can be a real threat. When playing BF1, it seems at times the stationary weapons are underpowered and outmatched (specifically referring to heavy machine guns). This leads to them being neglected, which is a shame because some of them are in some awesome locations (ie: the top of the hill near the French spawn in Verdun Heights)
I have a few suggestions to improve the stationary weapons on BF1.
First, make the heavy machine gun more more accurate and perhaps a 4 hit kill. No change to rate of fire. Can possibly be balanced by faster overheats
Second, give the Field gun an extra firing mode similar to the siege gun and coastal gun where an icon appears on the mini map. That would be really cool
Lastly, leave the flak gun the way it is. After several buffs and nerfs, it seems to be pretty good.
What are your thoughts?