Ghostcrawler
I'll be really frank here. I don't think the group portion of the heal is long for this world. I personally dig it and I feel smart when I see 5 people in a group all at once who need healing. It makes the spell different from other AEs.
On the other hand, it's pretty gamey. (I can only heal these five arbitrary people, why?) Priests feel like they have to ask raid leaders to set up groups with their weird AE spell in mind, which is really unlikely to happen in Raid Finder. It doesn't work at all on encounters like the shrines in Sha of Fear.
We're not going to change it for 5.2. We're probably not going to change it for 5.3. But I sense the writing on the wall here that it won't last much longer. I can imagine a future iteration where
Gebet der Heilung is the AE equivalent of Gheal and
Segenswort: Heiligung is the AE equivalent of
Blitzheilung. (Yes, I know Disc doesn't have
Segenswort: Heiligung - I'm in a really theoretical space here.)
Sorry. I broke my own rule about simple questions and answers. Sometimes I can't help it.
At the moment (which could still change) Rapture provides a 25% cheaper
Machtwort: Schild and a 150% mana return on a
Machtwort: Schild. When we tried PW:S at 50%, it became too efficient to use nothing but
Machtwort: Schild. We aren't trying to kill
Gebet der Heilung use completely, just shift to a balance where
Machtwort: Schild and SS are used for absorbs, and
Gebet der Heilung is used for healing. Yes, Disc
Gebet der Heilung will be weaker than Holy
Gebet der Heilung, but that is offset by the incredible benefit brought by absorbs. Please don't interpret this as "Because absorbs are so good and because absorbs are my thing, it is a design failure if I ever cast an actual heal."