I do not feel like chain heal is dominant at the moment. My current talents are as follows
Lightning Surge Totem
Echo of the Elements
This affords a nearly constant rotation of Riptide, HW/HS, HW/HS, with HR, HST, and GotQ on CD weaved in.
I have tried the Wellspring/Cloudburst route as well, and while I did nearly as well on the meters I didn’t like how it felt to play as much.
Last thing I noticed is Healing Rain is pretty low on your chart. It is very strong right now and I attempt to cast it on CD.
In short, I would recommend playing with talents and other rotations and find out where throughput meets a rotation you are comfortable playing. Hope this helps.
disclaimer: These are the opinions of an amateur resto shaman.