"Shadow Priests who want to focus on single-target damage can aim for Mastery in their gearing; or, when multi-dotting is more valuable, prefer other secondary stats over Mastery."
With reforging gone, we will need a mastery set for single target and another set for multidot fights. This design is really bad. What were they thinking ? I don't want another expansion where we only do good dps on certain bosses. Hopefully this wont make it to live, cause it seems really stupid.