No thanks. I've always hated healing and magic/potions/medkits in my RPG's and FPS's both with a few exceptions (TF/TF2/BF games/Global Agenda/America's Army. In other words, squad based shooters). Even when it is done right, America's Army for example, you have to stop, kneel down next to the player for an extended timer while vunerable in order to restore a fraction of health to prevent their death. Never a full heal (with exception to TF, which is a different breed of game).
The healing tent is great, there should be no reliable mid-fight healing. It should be done during lulls in the combat, tactical withdrawls, and between battles. On the field, never.