Everything WoD and WotLK have in common:
Iconic main Warcraft character? Check.
A world that we've always wished we could've visited (before it got nuked by magic)? Check.
Some actually new gameplay features? Check.
A redesigned world and rewritten story formula? Check.
New, innovative PvP map? Check.
A new raid design that encourages new players and small groups to raid? Check.
Tons of skeptics doubting whether or not the expac will be any good? Check.
Were all set to go!