I've pointed out before that there's not really any patterns that drop from current raid/dungeon experiences. Most of the stuff in Wrath is learned from the trainer with some quests or research that you can do every once in awhile. They basically made it so that anyone can get every recipe in Wrath.
I don't really agree with philosophy. If you're in a guild running the deepest, hardest dungeons, you should get the patterns for the best stuff. Heck, the materials should come from those same dungeons as well. Some random guy that played the AH well should be able to have the best gear in the game. (I'm exaggerating here, folks.)
But all that aside, let's talk about the feats of strength you have to perform in order to get the "cool kid" tailoring patterns.
This cloak you can make once you've successfully run all of the instances in Northrend and gotten the Northrend Dungeonmaster achievement. Okay, not that big of a deal. You put in a little effort, hit every dungeon, and you get this pattern. I'm on board with this one. Makes sense.
This one, however, seems a bit more extreme. You have to get the Loremaster of Northrend achievement. That means that you have to complete 875 quests in order to be able to craft this bad boy. So, maybe the "hardcore" people in Wrath aren't the raiders, but the questers and completetists.
And that's it. As far as I'm aware, there are exactly 2 patterns that you have to work for for Wrath crafting. The Wispcloak will be a gimmie for me, but the Deathchill's gonna take some time. But I think I'm about 1/4th the way there. :)