Originally Posted by
Belloc
Magtheridon post-nerf, for that matter. Coordination fights requiring more than a third of the raid to do something at a specific time are always difficult without practice. Pugs, especially, will not enjoy Magtheridon, even if it's an easy fight otherwise.
Netherspite is similar in that it has responsibilities for the raid, but it's also such an easy concept that I can't remember ever seeing a group have trouble with it. Now, pre-nerf Shade of Aran, on the other hand -- bring 2 warlocks or hope that you're not carrying any deadweight.
Prince... eh. Even with the movement, it's not a particularly bad fight. This one was more of a number's game, imo. If your healers are capable, you'll probably be fine outside of seriously bad play.
Hydross, with the appropriate resist gear, was fine. I was expecting a tough fight, but my guild had no issue with it.
Pug killers: Magtheridon, Gruul (shatter), Leotheras, Vashj, High Astromancer Solarian, Kael'thas, maybe Kazrogal if they have low DPS, definitely Archimonde, probably everything after Shade in BT, and Sunwell is completely out of the question for anything other than solid groups.
Granted, some of this might be mitigated by having ultra-high DPS specs/configurations discovered that weren't used during TBC. I mean, current Classic numbers weren't standard back in Vanilla, were they?