We realize Prot paladins sometimes use Exorcism to generate threat at range. While you can technically still do that, we understand that sometimes you might not be able to afford the cast time (say you are already in melee and adds join the battle).
To address this, we are going to change Hand of Reckoning to cause a lot more Holy damage. However, it will not cause this damage if the target is already attacking you. This lets you use it at range on adds, but won't turn it into a rotational ability that you have to keep using while something is beating on you.
Source
6/22/2009
Prot Paladins and Exorcism
I sometimes managed to slip in Exorcism on the mob I am currently tanking for more threat or more damage. And I definitely use it when I'm not currently tanking but helping to do some damage. I assume that HoR causing that extra damage is done after the taunt effect so that we get a giant boost on threat? Or is it just intended to be useful on mobs immune to taunt?