I didn't saw any thread about this, so there we go.
Personally I'm using this:
Normal Mode
The Stone Guard: Archimonde Vengeance
Feng: Archimonde Vengeance on Earthquakes and Dreadflame
Garaj'al:Archimonde Vengeance
Elegon:Kil'Jaeden Cunning
Will of the Emperor:Kil'Jaeden Cunning
SG: AV (The only thing I do is running around for tiles anyways, so I don't really care for this fight)
Feng: AV (active during the last no-under-bubble fire and arcane AoE, rest of the fight only passive)
Gara'jal: AV (maybe switching for KJC for the next progress night, not sure yet, AV is only useful IF you get hit by the Doll, KJC could be used everytime while running to the totem or after getting back for running back to the raid)
Spirit Kings: KJC (dps is not important here, so I'll go for the movement)
Elegon: AV (av during execute is a nice boost, KJC is quite useless here for me, since with our strategy, I move only a few steps during the whole encounter)
Kings: if I play Demo for the Aura of Elements again: MF. As Affliction, I'm not sure yet.