Sweet, DK tanking nerf.

[accretion]

Death Knights were a business decision, pure and simple.

I find that suggestion very doubtful. Lets just say that there's a reason why game designers don't make bussiness decisions and management, marketing, etc don't make game designs

As for the nerfs, rebalancing has happened each time any class has undergone a major talent tree change. Deathknights aren't an exception.

I'm not saying accountants designed the class, but I am suggesting that at some level, people with a vested business interest in promoting a strong WoW franchise (perhaps even senior devs) knew that it was in WoW's best interest to introduce a class that erred on the side of OP.

Introducing a "boring" or underpowered class wouldn't generate the right kind of momentum for Bliz, at a time where they were expected to show a bump in subscriptions and revenue with LK.

And yes, re-balancing is common. My point is that you won't see DK's being re-balanced upward anytime soon.