I am still collecting the 150 mark of the world tree to open up more quests (I suppose). And another 150 (I presume) to open up more. How are you able to clear the entire 4.2 content now?
So please be specific in your title.
As for downing raid bosses in whatever mode, I don't give a dime. Seriously. I enjoy questing and causal heroic 5-man'ing. Until I get my hands onto the epic reward of Avenger of Hjyal, 4.2 is far from cleared.