Punishing guild runs? Unless your guild is bad, guild runs have a much higher success rate than pugs because there's coordination, communication, etc. The buff is to compensate for pugs not having that.
Once content patches get released they will become a joke, and eventually it will turn out like WotLK with being able to jump into the current content after running them. If this wasn't the case though, it would be another BC situation, where the hardcore players got to see all the content, while a majority of the playerbase never got passed Karazhan.
Now the difference Blizzard can make is retaining the difficulty of raids of this tier, especially in heroic. I feel the difficulty now is good. Normals aren't necessarily faceroll, at least not to the scope of WotLK raids, and heroics are quite difficult.
And as for your last comment. Why so mean