I think it's a good idea, kinda like the monks in the old AOE games
Berengers detailed description and non trollable format for healing kit, be it bandages or rubbing alcohol on a wound, makes perfect sense. In medieval times there was always some people on hand to snap arrows off once they were in a persons body, then clean the area = thus healing in a respect.
Spammers and my old friendchers will be able to pick these people off on the battlefield too, which will be good for their KD ratios, seeing as that's all they worry about.
Healing tent is useless, no team ever bothers cos 1 arrow and it's down (excuse me? cloth tent, arrow would just pass through and it would still be standing in real life LOL) so either buff the tent to make it more desirable or implement some kinda healing feature like berenger has suggested.