I know the health system is discussed in great volume, however I feel my suggestion is aimed more towards realism which I believe is the main goal for the developers.
My suggestion is not to change the way damage is applied, or how armour protects you or anything like that.
I would like to propose that the health stats are removed from the overview, and as you train in medical-related skills, you can check your status (similar to a magazine ammo check). This skill will also change how medical treatment is applied, and allow for players to treat their team-mates with an empha