[I posted this in a comment to a friend, but I think I want to post it on its own too.]

This last week I’ve been leveling my warlock. Got tired of Plaguelands and all that gathering of drops, so I cleared all my quests and hied myself to Hellfire Peninsula. Over three or four days I’ve completed all the quests except the (Dungeon) and two [70] quests, got the discovery and the questing achievements for the area, and moved on to Zangarmarsh. Details of my Hellfire sortie