WoW's implementation of a melee-based healer was honestly very interesting and I wish they had been more bold with it. While they had some classic heals, I feel like their intent for reaching ranged was via the statue (which duplicated your healing to people near it) and the orbs (which people could walk through, they just appeared around the battle area at random when you healed). The main problem with the orbs, of course, was that people wouldn't walk through them.