Imagine...fighting something mega super strong with your group. Everyone's life is held in the prophet's hand. But son of a gun, he pulled agro and got himself killed. Now what? Your templar is almost dead and needs help... Instead of running around in circles, kiting the heck out of the monster beast you're fighting, you are able to save the templar by throwing a healing pot on him.
My suggestion is special healing pots that you are able to cast on anyone in your group. The pots do not heal them completely, but only a percentage of their health. They would be available for all levels. The potion effects should only heal for about 15-20% of their overall health. Maybe make them purchasable with EP, like the repair kits.
For now, enjoy this wonderful video...