I just had an idea for Rescue if no one else has thought of it, what about adding a short invulnerability(duration of ACTIVATION ANIMATION ONLY) to the TARGET that is being rescued? I think the addition could be beneficial yet not break the power in any way, and it allows for the healers to not have to focus on the one person they were rescuing because of human reflexes. Either that or maybe a second charge like some abilities have, keeping the current cooldown timer it has.