Well, Fury is just basically keeping Bloodthirst and Whirlwind on cooldown while using Slam procs and dumping any leftover rage into Heroic Strike. It depends on how you look at the class, really. Demonology warlocks are - put a curse, keep Immolate and Corruption on the target, spam Shadowbolt, cast 3x Incinerates when Molten Core procs, use Soulfire instead of Shadowbolt and Incinerate below 35%. Arcane mages are 3-4x Arcane Blast > 1x Arcane Missiles, repeat. Assassination rogues are 2x Muti + Envenom, and keep Hunger for Blood up. Combat rogues are keep Slice and Dice up, fill with Eviscerate in the meantime, use cooldowns whenever possible. FDK is keep diseases up, fill with Obliterate, dump RP into Frost Strike, use Howling Blast whenever Rime procs. I can continue like that for all classes and specs, but you get the idea - nothing is really hard or challenging or interesting when it comes to gameplay itself. In most cases it's no more than 4-5 buttons.
I mean, I don't know... Everything is boring, honestly. The only two challenging PvE specs on WotLK are enhancement shaman and feral druid, but enhancement is low-end DPS and as a druid being MDPS is literally the worst of the 4 options - anyone would prefer a boomkin, a tree, or a bear to a cat.