Seriously, clerics need not a single nerf whatsoever. Have a rogue focus and stun them, get a healing debuff on them, and they are completely dead no matter what. Simple as that. If anyone facing a cleric has a single clue how to play their class, especially if they are a warrior/rogue or a warlock/necro/archon, they can easily get the cleric out of the way with absolutely no problem.