The impenetrable wall of mg42... The machine gun is not only buggy (deploys the wrong way and reload glitch) but it has a slow aim time (not traverse). I find the mg42 too be good but no where as good as the mg34. Elite Infantry? You mean Grens that my riflemen can get easy vet from them. They're good with the lmg42, but upgraded riflemen can still take them on.
Pshrecks shining? Against Heavy Tanks. No. Against medium armor, I agree. IS2s can still squad wipe Pgrens. ISU, maybe, if you flank it and manage to kill it's supporting infantry. You're definitely right about the jacksons and other medium Armour.
Allies do have a hard time against axis, but that's only if you allow them to get those tanks! I like the standard ZIS more than a pak but a vetted pak is by far superior.
I was talking from a soviet PoV mainly.
Maxims have the deploy bug too, and for controlling blobs lategame Mg42 and Mg43 are way better.
Against soviets, gren+lmg are only kept at bay by shocks, and that is using a lot of micro
(playing with covers and smoke) to get at close range. They melt every other infantry unit.
Panzerschrecks are useful against all tanks. They are a determining factor in the fights between heavy tanks. I find really unbalanced that allied factions doesn't have any kind of decent AT infantry. If you see that the soviet player went to a Shocks' doctrine then you have nothing to fear from the allied infantry against your tanks.
Even Guards' button are easily cancelled by a smoke discharge that is even cheaper than the button.
Lastly, IS2 wiping squads is not common. ISU-152 obviously overperfom, but is the only thing that keep allies alive lategame, nerfing it whitout addressing before other aspects will throw allies to the pit in teamgames.