The medical system is a shame. It breaks the fun of the medic to go to the bad injured soldier. In ARMA2 if a soldier was bad injured, he would be on ground moving with pain but not translating to any desired place. That made the doctor or other soldier to go for the hurt person.
Now the hurt person always goes to the medic.
To solve this you could add the medical system that have the online End Game mode. That is much better than the one we already have.
It would be more desirable to create one like ACE3 or better and pay for it if you release as a download content. That way we would have more compatibility in online matches.