I was thinking about a minor Glyph for Exorcism that would make it instant again, but at the cost that you can no longer cast it on players.
Could be helpfull at a situation where you have adds spawning midfight and you need some immediate threat on it. No offense but the threat from the taunt ability is not that high. I have seen mobs being taunted only to run back while they were running to the paladin tank. An instant cast ability that deals high damage on low cooldown really helps with this. What do you guys think?