Many classes have interesting five-point talents immediately preceding their 51-point talents. Heck, two out of the three Priest ones are pretty good. Discipline has Borrowed Time, which brilliantly capitalizes on the new Power Word: Shield-centric healing method of that tree. Shadow has Twisted Faith which, alright, is not the most exciting, but at least it improves Shadow's main damage spells considerably, as well as letting them get a bit more out of spirit.
In Holy, we're stuck with something called Divine Providence. Basically, every heal that can hit more than one target is up by +2/4/6/8/10%. Not only is this boring as heck, but it's not even good. For it to meet the benchmark of 1% improvement per talent point, fully half of your healing would have to come from these heals. I can't speak for everyone, but I'm willing to bet that at least 70% of my healing will come from Greater Heal, Flash Heal, and Renew, gimmick fights aside. These are heals that this talent does absolutely nothing for.
The devs "are sympathetic to the notion that Divine Providence feels like a second Spritual Healing but with less effect" (which is exactly what it is), so they're buffing it. It will now, in addition to its previous effect, reduce the cooldown of Prayer of Mending by 6/12/18/24/30%. 30% off is 3 seconds, so PoM will be on a 7-second cooldown with 5/5 in Divine Providence. This is...nice, I guess, but I'm in agreement with the Dwarf Priest here: I'm still not taking it. 3 seconds off PoM's CD and a 10% boost to 30% of my healing is not worth 5 points at the deep end of my tree; this is the sort of stuff I expect from a tier 4 talent, not tier 10.