You make great points rtschutter. However, we didn't make the changes to address the Maxim vs. MG42 scenario. It was in response to German weapon team vulnerabilities. Namely, to snipers, tank shells, grenades, etc. More so, the cost of losing a MG42 is much higher for Germans than losing a Maxim for Soviets which compounded the issue.
We did consider the consequence of this change; flanking is now less punishing to the receiving playing. Note I said less punishing, typically you can still force a retreat and in fewer circumstances you can actually decrew the weapon team. If you do manage to do this as Soviets, you get the best of both worlds when you recrew that weapon.
I don't think the extra man has had a major impact on the balance of the MG42, all the same counters still apply. It does reduce the risk of using the MG42, so if anything I might argue that the tactics needed to defeat a well positioned HMG are harder to pull off than the tactics required to positioned said HMG.
That said, we had a very similar reaction to that of the community when we first started testing this change. However, after a few days of testing we begin to formulate new and effective strategies and tactics to take the weapons teams out. Quite frankly, if the German player builds a number of HMG's early on, they are leaving themselves extremely vulnerable to a number of hard counters. The M3 and 120mm mortar proved the most effective counter, Molotovs and the use of buildings were a close second.
If you are finding that the German player is garrisoning his MGs, I would suggest getting 1 Penal Battalion and using their satchel grenade. This typically knocks the entire building out.
I think there's another issue here that seems to be overlooked. Granted this issue has little to do with balance and all to do with aesthetics, but it's still important.
If durability of Ost weapon crews was the issue, then I feel increasing the overall health of the unit rather than placing more "entities" in the crew is a better option.
The visual design of both armies has the Soviets with a greater amount of "entities" on the field at any given time to show just how massive the ground army was.
By lessening the gap between the two, and giving the Germans more of a visual presence in bodies, it cheapens the feeling of overwhelming numbers for the Soviets.
This is also true of the engineer and pio squads. I really, really wish the Ost pios would only be 3 man, vs 4 man engy squads. You could very well adjust HP on pios to make it more balanced.