Aug 5th 2008 7:46PM What you have to give up, however, to get the mana return and lowered gcd is everything below 20 points in holy: spiritual guidance, spiritual healing, circle of healing, and other goodies.
PW:S certainly has its uses, and it is looking like it will get even better in WotLK, but when it comes to PvE healing, it still will not have the efficiency to make a healing rotation, regardless of spec.
Aug 5th 2008 6:42PM The reason Priests don't cast PW:S more often is not rage mechanics, it's that it is terribly inefficient in terms of hps and hpm.
The 1.5 gcd makes it pale in comparison to flash heal, which is likewise inferior to a GHeal. PW:S is properly used when the target has less than a second and a half to live or you have to heal on the run.