be worth the money you paid for it

I might not agree with a lot of the changes in the alpha notes, but one thing I've always found is that even if the coming class changes look grim to you, the expansions Blizzard releases wow gold always have enough content to play through despite that to at least be worth the money you paid for it.

I always find myself coming back and playing them even if I hate the class changes or don't agree with a lot of end games changes (like dailies, oh god that was awful, but I loved the leveling experience in MoP).