While it is a bit of a challenge, it's what heroics should be. Heroic. It goes back to the BC playstyle (at least for the first part) and makes groups think. To be really successful in this dungeon, you either need a really good AoE tank, or usage of CC. Asking people in WotLK to use CC though is a bit much, but it really is what makes this dungeon fun and challenging.
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