Cigarette
Grandfathered
That's pretty much the route of all Blizz's mistakes in this game over the years. They STILL think that making the game easier will bring them more subs, yet it's been doing the EXACT OPPOSITE for years now. However, if I really had to pick my #1 it's Blizzard's hard-on with killing FUN in the game. A really easy example of that was mogging BoA's with an 80+ and mailing it to some lowbie on your account so it had a nice Raid tier look or w/e. Blizz nerfed that shit hard and fast because fun can't exist in WoW.
on the other hand, you have to admit that what makes people with those mogs look cool is the fact that they're absolutely unique, and only people who glitchmogged their looms when that glitch was available now have that look. If they let everyone mog whatever they wanted onto their looms and send them back, we'd ALL be in raid tier. It would be BoA mounts all over again(the cool factor of your rivendare's deathcharger basically disapeared when suddenly EVERYONE had one)