I would love to see a Heal Over Time based healer class. I miss my Resto Druid in WoW...
Or, CHAIN HEALZ! Shamans also made fun healers.
Hmmm... Geomancer healer base class with a couple HOTs and a chain heal. Splits into Druid and Shaman, both healers. Druid focus on HOTs and Shamans focus on chain heals. Both have a placable AOE heal retained from geomancer.
But! Im just rambling. :3