Highest Neckpiece: 522 VP item... Most popular spec: Frost. Most popular L90 talent: IW.
Also, I didn't say Invo would be nerfed, I said that KJC got looked at (and consequently nerfed) because it was super popular. I said Invocation would also be looked at using that line of logic (as it is, but GC is being too pus---PASSIVE about changing things >_>
PS: This data you linked is for 5.0 only. Notice how Scorch is a talent choice.