Well I tested the new maxim vs AI and IMO it is OP when used in garrison.
Making the arc narrower will help axis and especially OKW to deal with it more easily while IMO creating less problems than most other solutions. If you do not like my suggestion as solution I suggest you come up with another.
Speaking for myself, my own list of priorities when considering changes to the Maxim (which is the only Soviet or OKW unit we are allowed to touch):
0. Raise the skill-cap needed to perform Maxim spam
1. Soviets should remain viable as a faction (i.e., at least 2 alternative strategies vs both OKW and OST)
2. Soviet T2 openings should remain viable vs both OST and OKW (i.e., at least 33% win-ratio). This also counts T2-into-T1 strats (who knows, we might start seeing them)
3. Maxim should remain a viable tool to counter LMG-blobs/Volks-blobs
4. Maxim spam should become an unviable/easy-to-counter strat for OST (3 is higher than 4 because Conscripts are shit)
5. Maxim spam should be unviable vs OKW
We are not going to optimise for goal #5 until we have achieved goals #1-4.
Making Maxim spam unviable
vs OKW is
not our primary design goal. Given scope scope limitations and OKW's insane lategame that goal is a bit further down the list of our priorities.
OKW simply sets the bar for MGs too low, and that's an OKW problem. Similarly, OKW sets the bar for late-game performance simply too high. That's, again, an OKW problem. Thus, we will probably have to deal with OKW problems when we examine OKW as a whole.