That is always a great solution for engineers/osttrupen type of infantry, it would most certainly improve reliability of conscripts since they are already very low accuracy unit that quickly becomes ineffective above range 10 with inclusion of cover, but with grens, thing is, they already have pretty good accuracy at all ranges and changes here, if any, would need to be minor and surgical, otherwise accuracy vet could completely out-scale and negate rec acc vet.
Dont have to necessarily replace Damage with Accuracy, could also be replaced with fire rate nor have to reduce the damage down to Volks Damage either
Could for example reduce damage by 25% increase accuracy by 10% and reduce cooldown by 15%