DPAK:

To quote myself: "Certainly more useful in raid situations; even in 5-man, assuming single healers, it's very limited use."

(The "even" may have caused you to misread my comment; I apparently fail at editing when changing my wording midstream.)

Most of my comments were directed towards its potential use in 5-man content where you only have a single healer, as I generally prefer 51 point talents to be useful outside of raids. In raid situations, yes, more useful, though with the 3 minute cooldown, it's only going to help you through one of your emergency situations; Naj'entus freezes everyone every 60 seconds.

I'm not saying it's a completely useless talent, and I'm not saying I wouldn't use it. Yes, a last second rescue every 3 minutes per priest could be useful, if you're in just the right situation to use it, and if you haven't already cast the spell to benefit from the increased healing. I'm saying that it's a highly conditional ability that can come in useful in raids, but is much more difficult to use effectively outside of raids. Personally, I want more versatility out of a 51 point talent.