One of the things I have noticed is that in heavily mobile fights shaman can see huge loses in healing from people running out of healing rain. What about this solution? Switch Healing Rain and Healing Stream Totem. Make it Healing Rain totem that has the effect around our totem and "Healing Stream" becomes a 30 second CD lasting 15 seconds that causes our water shield to heal one target (three talented). This would help out with mobility as we can talent to move our totems on the very mobile fights.