Party? What Party? Cataclysm ends wow Parties. Or Divine Sacrifice nerf not in the Spirit

Tranquility will always be raid wide, just because the concept of a "group" within the raid is kind of a strange one. What does that group refer to in the game? It's not distance for example. We'd like to do this with every spell. (Source)

Divine Sacrifice was changed in Patch 3.3 to be "party only" to the dismay of many raids who now had to shuffle paladins around to groups that needed the extra protection.

I imagine in the new party-less world of Cataclysm, we could get something, like 

• 30% of all damage taken by the 5 lowest health raid members within 30 yards is redirected to the Paladin...

which could fit well into the new Healing Hands model of paladins radiating heals and protection to players around them.  

If the goal is to make Holy Paladins be better raid healers, then I think it makes sense for them to more like Discipline Priests then Holy Priests.  A Holy Paladin should be a damage shielder, redirecting damage from the raid into some mechanic that sheds the damage.  Currently the mechanic is Divine Sanctuary, but The Bubble is too powerful to be on a lower cool down.  Some sort of Divine Aegis that absorbs redirected damage but has to be managed carefully by the paladin.