I must say, one thing I do miss in the game is the learning curve. When TBC came out, I'd just been promoted to raid leader for the little guild I was in at the time, and my job started with the hell fire 5 mans, I refused to let anyone tell me any mechanics, nor did I look them up, we just went in, saw what happened and come up with a strat, this went all the way up to starting kara, we got as far as Moroes before the officers decided the guild wasn't suited for raiding because they were all to lazy to actually gear up so I left and joined a hardcore guild ^_^