Let's just make like in COD! Make them stand 12 seconds perfectly still without moving and all health comes back like magic! (12 seconds is the estimated reload time for the people that thus not know!)
Or how about we make the medic have a medisket, it's like a musket but he shoots knives that heal and his melee cuts off limbs that grows up instantly so they heal!
Yea...No. Medic will never work in the game, even more in 1v1 or 2v2 regimental line battles, where 1 soldier gets hit then they all just wait for him to troll-heal.
Now either you take your idea, crumble it and eat it so we can all forget about it or either you will be named the worst title of all...A...A..A FRENCHIE! Now go there and think.