This was a fantastic expansion. I loved the Heroic dungeons and the attunement process for receiving heroic keys. you knew anyone who had a key to run the heroic had done it many times on regular so they weren't a complete noob. Unlike in Wrath of the Lich King where I saved up crafting mats while I leveled, blacksmithed a ton of gear right when I hit 80 and was able to jump almost straight in to heroic dungeons. Man some of those early runs were terrible since I had no idea what I was doing or where I was going.. not good for the tank to be a noob.
RE: Retro Reviews - World of Warcraft: The Burning Crusade