This. I was more than happy when MoP went live simply because that damned staff was no longer "required".
Even worse, I was a playing a warlock, and most of us know how bad locks were on boss encounters in DS. I was actually forced to switch to my spriest just to finally get into a raiding guild, after they had 8/8H on farm.
Also, I believe hunters were eventually buffed; just can't recall when exactly. They still weren't great but in a better place than non-legendary casters IMO.