literally every caster in the game has a different style, takes a different talent, positions differently against rogues. every class makes different use of their trinket against rogues, every class with a dispellble cc has to commit another cc to the shadowpriest to make their control effective (this is unique - no other class except 5.2 ret paladins can do this)
all the most powerful comps contain at least one of those classes, and most of the strongest contain two. most dps classes work with the classes above. it's 100% proof that those three classes singlehandedly control the current meta
admittedly mages are the first to get looked at when you get the game to a place where those three classes don't control the state of arena, but i'm not going to entertain this thread about how action has to be taken now against mages, especially when your "fix" is changing the scaling of a dispellable buff. apply your fix in game and dispel it if that's all it takes to balance the class
And tell me, how does a decorated mage with 6 helmets enjoy the current mage playstyle? Not claiming that mages are op or w/e, but strictly in retrospect how does it compare with the playstyle in past seasons. Are you happy that the abysmal gap (in the past) between a good mage and a bad mage is becoming smaller and smaller?