I dont see what all the fuss is about. This is a good patch imo and will definitely help out from seeing the constant IS-2's and Tigers doctrines picked. It will actually encourage players to build other units in their army.
These guys totally rape with this weapon. It's mainly the reason I pick this doctrine so much of the time. There's no fear of dropping them for the enemy like how it is with the MG34. The other day playing I had a vet 5 squad with 70 infantry kills from these things.