@Noodlesocks I do like that as a solution as well however I'm not sure if DICE could code that with Frostbite. It's one thing to reset an internal repair time cycle like with vehicles but another to have an external unit's repairing blocked. This is because the repair tool is both healer and weapon. I think they'd have to redo the way the repair tool heals and damages so that it instead heals like vehicle self repair does where it is in chunks rather that continuous.
But yes, if that could be done where no healing for x seconds after incurring damage, that would be ideal and adhere to the doctrine of separation of healing and suffering.