WotLK is and has been fun. Everyone likes different things, you and me both.
It's a minority view maybe, but I miss allot of the game challenges. As well I really miss the days when it was really challenging to be a Tank or a Good Tank at least, but thats my view from my experience. These days any idiot if they are can tank just about! And as a result I believe you have more lazy DPSer's and Healers. And Tanks as well going full circle.
I miss the days of tBC when in Heroics mobs actually murdered people. Yes I may be one sick Veteran Tank. But it was damn thrilling to know back in tBC if you couldn't think and execute pulls with some logic and challenge as a good Tank, healers got murdered in one hit, incompetent DPSers got their ass kicked and lazy Tanks was shown to be lazy and incompetent.
Yes i enjoyed those days every bit! It was thrilling to know doing things and executing things as a Tank was that challenging. It may not be what you miss about the game or old days, but it's what I personally miss about my game and it's my opinion as well. That don't make it wrong or right. It's what I miss for the thrill of Tanking.
These days it's just about AoE everything, let's all be lazy together and stand in the back and just AoE as well for the easy ride of a faceroll to purple loot. Hey AoEing is fun, i enjoy that too at times. But i miss some of the dungeon tactics of the past that does involve a bit of thinking. Some people won't agree with that and thats fine, this may not be what you miss about the game, it could be something else and thats all fine. But i'm different from you in what i find fun or enjoyable and what i miss just won't be the same for you based on how i've played the game.
My Favorite Instance. Even with WotLK, I'll still have to say it was Steamvault! People used to get murdered their for being incompetent with actually using their skill set or not knowing how to use them. It was nothing faceroll about running Steamvault back in tBC or Shadow Labs either. Yes I'm one sick Paladin maybe. Maybe I'm just a bit twisted by the light in my ways.