It has been a WOW GOLD perennial issue.
I believe most of us already know most of the reasons for these nerfs, so here i just make a few more observations and answer questions.
The Howling Blast nerf was expected and needed. Blizzard's pretty protective of its preferred way for a class to play, and Howling Blast, a powerful single-target attack with a powerful secondary AOE, both of which do magic damage that bypasses armor, has been a WOW GOLD perennial issue. Howling Blast is to some extent a fixture of the frost spec, so if decided to take it away, Blizzard may not feel comfortable. But there's a line that's hard to walk when balancing it. Death knights turn into a machine gun in PVE and PVP, blasting out multiple Howling Blasts at once and mowing down opponents with relative ease. Too little, and it becomes more or less an afterthought.
To know more, the Obliterate nerf continues to confound. Given that frost death knights are still middle of the pack in PVE DPS, the one-two whammy of a damage nerf is a thorn in the side of PVE frost death knights everywhere. Till now, we are still not fit the basement on DPS, and we still beat out unholy death knights, while the sad thing is that the drop in DPS has been noticeable. While the Howling Blast nerf is understandable, the Obliterate nerf constantly seem to totally miss the point and unfairly penalizes PVE DPS death knights for a rarely used PVP trick.
