I was taking a look at
http://www.mmo-champion.com/class-sh...in-wrath-faq*/
wich often updated and always a great source of quality info to freshen up.
To my great suprise, I saw that Flame Shock is (quite high) in the enhancement priority system.
I did not actively raid during 3.2, but I did raid a lot during 3.1 (Ulduar). Correct me if I'm rong, but in 3.1 Flame Shock had no place to be in the Enhancement priority system, has Earth Shock was the optimal Shock to use on every shock cooldown.
I am currently ( at least I was last night ) only using Earth shock in my PS.
Since when has Flame shock been viable ? And how did it become to have such a high priority ?