I'm looking at a 30 minute wait for LFR on my DK and although I can pull 40 quest mobs at once when my better geared rogue can pull like 3, I don't see how the 3k (formerly 6k) valor obstacle and all the assorted RNG collection quests can be overcome before WoW hits version 6.
If you haven't been on top of this shit, you're not going to get it.