Vanilla WoW was incredibly well designed and revolutionized the genre, there is no arguing that. It was also extremely accessible and removed a lot of the time sinks that you would see in other MMO's. That being said as popcorn as the leveling content was the game was always about end game, which is where the meat and potatoes of it was and where the true depth came into it.
So I can understand why you chuckle at "wow deep", since you got lvl 40 at best during your time played.
The thing is that TBC is to Vanilla WoW, what WoW was to the MMO market in general. Which is what I think I was trying to get at. End game TBC has more content than you can shake a stick at, in fact it has more content then the next two competitors combined, and that isn't hyperbole.
As a raider, end game there is no other game that comes within a mile of the complexity, snap decision making, balls to the walls encounters that you see in WoW. Looking back at all the other MMO's it was simply stand here, do this, avoid that. WoW has some mindboggling innovative encounters.
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Bode - 100 Holy Paladin - Lightbringer