@fufu are you reading this thread at all??? You can't look at simply the threat removal and say "I'm not a fan of the threat change", the threat removal was to make way for the active mitigation changes that are yet to come you can't have both because then it would be too busy. Could the devs have waited till they'd finish their active mitigations changes first before neutering threat? Sure, but obviously they felt it was something important to get in sooner rather than later and the pros of making PUGs with bad or apathetic DPS (or just plain out geared DPS as the example randy made) more tolerable were more important than the con of temporarily losing the joy of providing a great threat ceiling for your raid.

Ghostcrawler is essentially saying "Threat has problems, and we feel that its not a compelling mechanic anymore, we're replacing it with something else". Threat was fun (where it was fun) because it was our only significant mechanic. They're replacing that with something they feel will be more fun, more of the time, and be more compelling along the lines we choose to be tanks for. I for sure chose to tank for the thrill of staying alive against the odds of massive foes, not for the thrill of allowing DPS to start earlier or sustain throughput longer. I took pride in the later, but only because it was the only things to truly take pride in as a tank in this game.

You will be able to tell a good tank from a bad tank when they put in the active mitigation mechanics. The good tanks will still be alive, be able to pull more and have their healers sustain mana for longer.