Shit cracks me up, some of you guys are just frothing.
"Be happy it's coming at all!"
Right. Be grateful that a feature other games have that makes the archaic one this game has better is something to be grateful for, since you know, Blizzard is doing it for free out of the goodness of their collective hearts.
Wrong.
They're charging you for it, and you deserve something that's actually worth the money.
I find it utterly reprehensible that this system isn't just a nice carbon-copy of Diablo III's. Just because you found that long-lost, ever-evasive cloth piece on your plate guy doesn't mean you should just forfeit unlocking the appearance. That's dumb, and there's not a single good reason to do it that way aside from the classic Blizzard "carrot on a stick" that so many of you just love to chase.
No one is going to try to unlock everything on one character - why would anyone who only plays one character WANT all of those transmogs? They wouldn't.
People who play several different characters or at least two different armor types are having a little trouble seeing a good reason for unlocks to be restricted. So I'm going to farm tier lookalike armor on my warrior, paladin, and rogue every week - why the fuck should it matter if I found 24 pieces of it across my three guys, but it wasn't ALL plate on the plate guys and all leather pieces on my rogue? That's just silly, and it's a pointless obstacle - the primary reason for which is again, longevity, Blizzard have hardly strayed from acknowledging that the hunt for transmog gear is something they rely on in terms of giving people a reason to play.
That's a bad reason. Transmog's purpose is not to give you this dopey item hunt to go on, it's primary purpose (y'know, that thing it actually does) is to let you change your appearance - because frankly this isn't WarCraft III and we're not all the same. You and I aren't footmen, and we're not hero units who all look the same - we're individuals and we have our own tastes.
So what annoys me is that Blizzard always wants to make it needlessly complicated and restrictive - the Diablo 3 system is fine - the big limit it has of course, is that class-specific sets need to be unlocked by that class - that's fine, and in WoW, that's also fine.
So in short:
Restrictions for Tier/Class-specific items = Good
Restrictions based on "primary" armor type = Bad
I wish they'd actually listen a bit, and while I think everyone knows that they're want to really get mileage out of the ol' carrot, I think it's being overdone a good bit here.