The downfall of chickens?

At this moment I am running around 4 characters between level 63 and 73. On disc/shadowpriest, and 3 tanks, a warrior, a paladin and a dw-frost dk. And I have noticed something that will not be good for the future...

I am, by all means, A TBC-child. I started around 2 months after TBC came out. One thing that was hammered down my throat was, let tank pull, unless he asks other wise (sheep-pulls anyone). A lot of people seem to be forgetting that these days, they just expect tanks to taunt of them, and get angry when you don't... /facepalm.

And then there's the constant AoE-spam that makes my screen light up. Most often casted before the tank has made any AoE-threat, or just a little... and then all the mobs start running to you... geesh, how can that happen?

Now the worst example of this are lazor-chickens. Not all of course, but a lot of them. They have three spells to use in dungeons it seems. Hurricane, Starfall and that knockback thingie, typhoon. A common scenario follows...

I run in, target secondary mob, fire of a spell, target primary target... ooh, falling stars... %$#@, use way to many spells with to few resources at my disposal, while the hurricane-spam is started. Chicken gets aggro (no barkskin whatsoever), and after 10 long seconds I finally have all the mobs back where I want them..... knockback... AAAAAARGH.

Now of course, chickens are a prime example, but I have some very bad feelings about the cata-dungeons. It is said that people actually have to think... O_o. Time for another example... Blood Furnace, the SECOND dungeon you encounter in Outlands.. just before the end, there are some packs with large demons. Do you know what they do?

Well, let's see what happens, tank pulls, 2 demons are hitting tank. All of a sudden one of the demons runs to a party-member 25 or so yards back, and stays there.... tank turns around, hits/taunts the demon back, and then the other one does the same. Healer is healing everywhere, but, no problems the group gets them down. Next pack is two of the same demon, and a warlock. Where do you think the ranged is going to stand?

Most of the time I even say, hug tank/demon, but no.... why listen to the healer/tank who gives a tip... oh, and remember the spell starfall... have fun with 2 warlocks summoning all kind of beasties, and 6 mobs charging every way, and not bothering to check who their angry at....

So, if cataclysm actually demands 3/3 in Common Sense, how will 60% of the players, the ones standing in the green, not learning from mob-abilities, etc., handle those dungeons. And how will the 40% sane-people handle it?

How will I handle it? I think guild-dungeons are back, and the LFD will die...
well, until we all overgear the places again, and AoE everything down.