People mentioning old un nerfed content, it got nerfed for a reason it not only was not getting done by most of players but a good portion of community up & quit.. fact is MMO survive by the Casual crowd, gone are days of needing a strategy guide for the strategy guide just to play MMOs they can't survive catering to the small hardcore audience that wants content so difficult one miss step in one players rotations causes a wipe. As for mechanic they don't add but rather build upon old/current AOEs/Lines/Debuffs etc because have balance it between classes, we have multiple classes that suffer from moving around & multiple that don't you can't introduce mechanics that are too easy nor too harsh towards both so you get a casual middle ground where players with decent skill will think it's babys first MMO & those under perform will probably think tough it's still not easy balance the design when so many classes function so differently on movement side.