You're Hit Your're Down
Any round hit inside the elbows and knees should immediately drop the wounded soldier to the ground. If it's not a lethal shot (head, neck, chest), the soldier should still be able to scramble to return fire but, not be up and running at full sprint. To avoid all the programing and development such a change might require, you could just double (200%) the current damage rate of every weapon on the battlefield. Currently, it feels a bit more like a BB Gun or Bottle Rocket fight than WWII. When major league baseball wanted to improve attendance, they perked up the ball so players could get more home runs. That's what's missing here in BFV. Listening while I play with squads the number one complaint I hear over the mc is related to underpowered hits and overpowered returned fire. "What, I shot him three times, then he shoots me back one time from 300 meters with a bb gun and I'm dead!" To satisfy the refrain, a well placed shot should kill, one inside the elbows and knees should drop the opponent to the ground reeling.
What army would equip it's soldiers with weapons and rounds that wouldn't kill with one-shot? Even in 1939? The majority of weapons should be one-leathal-shot-one-kill but, when not, when your're hit, you're down. Making this change would be one of the best ways to counter the new attrition system. If we are going to have fewer rounds, the ones we have should impart more significant results. Let's go harder than core baby!