As I also wrote in the comments section of Christian Belt's mage article on the Raid Finder, I've tested the LFR quite extensively, and I have to say I agree with Fox. Despite my initial high hopes, my optimism has been shattered by dozens of raids identical to the ones Fox describes.

He's completely right about why this feature is not going to work in its current incarnation: it attempts to bring a raiding mindset to a 5-man crowd. Combine that with the cumbersome method of dealing with disconnects/AFKers and the general impatience of the LFD crowd - especially with tanks and healers (which is directly connected to their relative scarcity in pugs) - and you have a recipe for disaster.

The bosses that are most consistently downed in LFR are the simplest: Morchok and Yor'saj (the first two bosses in the Siege of Wyrmrest Temple queue option) and Ultraxion and Blackhorn (first two bosses of the Fall of Deathwing queue option). Because of this, I foresee plenty of 2/4 groups in both wings of the Raid Finder, but all the other bosses that are more complicated than that (i.e, Zon'ozz, Hagara, both parts of DW) are going to have to be nerfed into oblivion for a pure pug to have any chance at downing them.

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