I did forget about that one!
My main gripe with Moonfire right now is that it feels wrong to be multidotting as a tank AND more importantly, the fact
Moonfire still has a facing requirement.
It drove me nuts all through Val'Shara that if a mob ended up behind me (when coralling multiple mobs or when they inevitably move in odd ways and end up behind you) I'd get a facing error. It's all fine and dandy that a ranged char has a facing requirement, since they have plenty of room to make sure they face whatever they're shooting, but as a tank, even the slightest movement will put mobs behind you.
I know Affliction dots have no facing requirement so if they are going to shove this Moonfire thing down our throat then at let them make it have no facing requirement anymore.
My main gripe though is with the loss of Faerie fire we have no short CD ranged silence anymore. There's tons of instances where silencing a caster mob so it comes over to where you are tanking other mobs is godly. Even as a ranged pull it's MUCH better than Moonfire since most caster mobs will just stay where they are and immediately start casting when pulled, making it that much easier for cleave to hit possibly CC'd mobs. With a silenced pull they skip that and come to you and out of the way of CC'd mobs.
TL;DR: I still don't like Moonfire