Sure that's gonna offset loss of 20% crit. And 35% mastery during combustion kappa. I mean, it's just numbers tuning, right? Pretty much like Ele shamans getting their maelstorm gain reduced by 90% or balance druids having their wrath cast time increased by 5 seconds.
Also stat weights were not adjusted at all, you still want crit more than anything and mastery is still complete and utter shit outside very rare scenarios and outside of having 80-100% of it. If anything, blizzard only encouraged us to stack even more crit, so shit like crafted neck with double crit and gem is more valuable for us than it is on live - because we need more crit, and we are encouraged to drop our other stats for it.
Answer me honestly, do you think that it's good design and "balance" for fire mage to not want almost any nighthold gear because titanforged EN gear that actually has crit is better? Seriously, i look at loot tables and laugh, i will pass on almost everything if i keep playing fire (which i won't in its current PTR state, i won't be brought up into a raid if i barely do more damage than a tank)
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Kinda what i did too. I'm not going to raid next patch, i just hope that these nerfs won't be enough to kick my out of mythic+