Cat was rushed, I don't see how that can be argued, by most games standards it's still great, but it's sub par when it comes to what I have come to expect from them, and what they expect of themselves.
It wasn't rushed, they used a same map, but with complete different mechanics, storylines, and even themes. And that, is more than what maps can offer, they're only a standing ground, what happens on it matters more.
Cataclysm is the biggest expansion from what I have seen. I have fond memories of Burning Crusade, but this one nails it, and surprised me a whole lot.
And I feel sorry if some jump to conclusions so fast, in such ignorance.