On the fear of lack of shreks, I believe it can be compensated by giving the raketen more range and a wider arc to be better at controlling the field vs early vehicles.
1. And foremost. Revert all changes to mines plz. Make them kill aprox 50% of the squad but not wipe full hp one. Remember how sweepers hard counter mine they auto-disable them if its in vision any unit can oneshot mine. Mines placing is apm and a risk itself since they clump around it.
2. Second thought about volks smg. Might be not bad. Player not forced to use it on every squad. Just on 1-2 to be flanking unit with grenades. Other volks will be fine unupgraded with extended vet advantage.
This in turn frees okw munition to use on skill-mines.
How much models ussualy flares now kill? 1?