With dynamic dots and haste breakpoints removed, I'm fairly sure blizzard will be able to balance us well, or at least better.
They also said that most aoe specs will lose a major portion of their single target, so you can see affliction, demonology, boomkins go down the drain in terms of single target. Whereas shadow they will kinda keep it like it is (besides that they will add some single target), so we jump to equals. Then again this is early talk, could be completely different in a few months.
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That's a problem that not only the hunter suffer from but also the melee, and also that's where multidotters prevail over the others.
I mean look at hunters on will of the emperor (best soakers by far), look at hunters on empress (top 5 damage), look at hunters on lei shen hc (competitive damage and solo soaking), look at garrosh hc (competitive damage). In the end it only matters that you do well at the end boss, because those are the most important, and hunters if they are good players, are rarely swapped out - unless they have like 20 locks in the roster or you really depend on hybrid cooldowns, which isn't the case in any guild besides the top 5 guilds.
If shadow priest had the damage of hunters, I doubt anyone would have even cared about buffs.