[2019] DICE, please consider this “Operation Health” a re-release for the game would not only be healthy, but would make you guys look great as well.

It massively tilts weapon balance in favor of high rate of fire weapons and makes engagements highly inconsistent, as getting a single headshot accidentally rather than deliberately occurs very often. If it takes 2 to 3 headshots to get a kill, good players will perform much better compared to bad players.

There is matchmaking for that.

The MP40 starts performing better than the Suomi around 21 meters, the Lewis Gun beats the FG42 after around 27 meters. And the difference before that is not exactly massive either.

ARs have no meaningful advantages over SMGs up until 30 meters. SMGs have meaningful advantages within that range (zoom in speed, time to fire after sprinting, hipfire). If you want more range, the slower firing SMGs are absolutely relevant and useful.

LMGs and ARs only pull ahead after 30 meters because SMGs now need one extra bullet to get a kill. Sometimes this is partially compensated for by the faster zoom in. But with only one bullet extra required to get a kill, you will still usually win if you have the drop on somebody. Again, this makes the slow firing SMGs relevant, because they allow you to engage still. Your range is heavily limited with the Thompson and Suomi in comparison.

AR hipfire is always worse than SMG hipfire. Upgraded AR has about 10 meters. hipfire range, base SMG about 15 meters and upgraded SMG around 20 meters. For headshots, those ranges are about half. Getting the hipfire upgrade on the StG also stops you from getting the ADS upgrades. On the MP40 you could get the ADS upgrades, still have better hipfire and make up some for the raw damage output disadvantage you have, particularly beyond 30 meters. The hipfire upgrade is not free and has a clear performance downside at medium range.

Within 30 meters, the raw TTK disadvantage of the MP40 or STEN against the StG is 33 ms. Zoom in advantage can be as high as 266 ms, although 66 to 100 ms is more common. Sprint to fire advantage is 66 ms.

Between 30 and 50 meters, raw TTK disadvantage is 150 ms. Effectively less if the StG has the hipfire upgrade and the SMG comes with the ADS upgrades. You will lose most perfectly even 1v1s. But if you have 100-200 ms of a drop on somebody, it will be tied or slightly in favor of the SMG, depending on if the AR is already ADS and if not, how fast it goes ADS. It is past 50 meters where SMGs really suffer because the lower bullet velocity starts making it hard to hit moving targets and the raw TTK disadvantage grows up to 266 ms at 75 meters.

With the faster firing SMGs, you'll miss out on a lot of opportunities past 20 meters. You get close range dominance, but you don't need more than an MP40 or EMP to beat most ARs and LMGs up close, if you hipfire them well. Only the 1907 might require a bit more ROF to duel.