Why hasn't SE buffed Warriors already.
Its pretty much a consensus that they are a fairly weak tank class. Most serious raiders saw that in late august, and SE even officially said it last week, when they planned to update the warrior for 2.1 patch with several buffs.
However, why are they waiting for this? Everyday that goes by, WAR is weaker and are suffering. They plan to rework the WAR class quite a bit, from what I heard, but it would literally take the game programmers 30 seconds to make a lot of the changes to warriors today, in a hotfix. Simply replace the 15% healing buff to 20%, make it available always during defiance, do you want you can immediately and today.
Some more compicated changes, like reworks of Holmgang could be released later in 2.1, but SE waiting for this I think is a very bad decision. They are simply trying to dangle a carrot, saying "something good is coming in the future, but you have to wait for it, we wont give it to you now keep paying/playing."