Originally Posted by MMO-Champion
We increased paladin mana costs because they were too efficient at healing. In raid encounters, for instance, paladins were sitting at 40% of their mana while the other healers were flat out of mana. Paladins were casting Divine Light as their main heal because they didn’t need the efficiency of Holy Light. You personally may not have been in that situation, but when looking at the overall picture, as well as running plenty of tests, this was our conclusion overall.
It is entirely possible this will hurt Holy paladins in PvP, where mana can be harder to come by. It is our hope that the recent Speed of Light change as well as another change or two coming will help offset that.