Bornakk actually replies in the thread that we're just being nostalgic for nostalgia's sake, and that even when CC was required, people whined that they needed to have certain classes in their groups. But what class doesn't have CC these days? Even Shamans got their CC, just as it wasn't actually needed any more. Crowd control added some semi-serious strategy even to trash fights in instances, and while we originally heard that it would come back at some point, Blizzard certainly seems to be done with it.
But we can be patient. The new instances in 3.2 are light to completely empty on trash, so maybe they're waiting for Icecrown to really put our CC skills and coordination to the test. I play a Hunter at endgame currently, so I might be biased, but I do love 5-mans, and I do miss the extra coordination and teamwork that a big CC-required pull provided. Hopefully they can find a way to mix that back in without requiring certain specs or classes to be along for the ride.