I was thinking about how Ret's sustained could be buffed without making our burst any stronger and it occured to me. They could just increase the damage of all our Holy Power generating abilities by 15% (meaning Cs, Judgement, Exo, HoW) but nerf the damage bonus of Holy Avenger by 15%. This would make our burst stay exactly the same as it is now when Cd's are up, but allow us to actually put out some damage when they are down.
Gc said that a couple weeks ago that they don't know how to buff Ret's sustained and gave an example like making wings 10%. I personally believe simply tuning up our generating abilities by 15% and nerfing Holy Avenger by the same amount accomplishes the goal in the correct manner.