It’s speculation for sure. But, no one can deny that Blizzard has continually upped the power and the effects of cards with every expansion. And, no one can deny that the class wasn’t balanced on release, and may still not be. I do not have proof that the motivation is greed, but as Blizzard is an exchange traded company that operates on the same ethos that all corporations do, which is to make more money every year irrespective of what other concerns there may be, then I gauge that it’s a really safe bet. I think it is also safe to say the class does not exist for balance or diversity, as it made the game more unbalanced than ever, and there are other classes that do everything DH does, just not all in one class.