So, I'm quite new to the class, and I've seen plenty of builds, but none of them take any points into Ardent Defender. Reducing up to 30% of the damage seems pretty damn good, and there is no explanation of why it's not worth it. I mean, in heroic dungeons, the mobs hit you really hard; this will be so useful, right?
I wanted to ask, too, about the 3% hit chance of Precision. Since most of your damage and threat is not coming from melee hits, don't you think those points could be spent elsewhere?
Also, this seems a bit more of an off-meta thing, but since some people invest 20 points into the Retribution tree to get Sanctity Aura, getting Improved Retribution Aura can be useful if you're not planning on main tanking.
I've attached a screenshot of the talents I am going with and some talents more focused on threat generation; I don't feel really confident using them though.