Who cares about weakened soul debuff? If you are spamming shields on the raid you are doing it wrong unless its tortos heroic before quake stomp. Which even then you can just arrange for you to take one group each. And as you can run with like 8k spirit now with the leg meta, you dont need to get rapture on cooldown as it returns no mana with that low spirit. Double disc, holy pala is right now the strongest healing composition.