I also find it quite interesting and also somewhat amusing that you chose to single me out for an ad hominem attack apparently because, on this account of mine at least, you can't see any helmets, when further up the thread people have been echoing what I said. You should try substituting logic and reasoning for character assassination as it may help you in the long run.
I guess I should have elaborated. It seems you think I feel that mages shouldn't be compensated for this change because it affects mage damage and you supposedly think that mage damage is easy to stop by competent players. You described a scenario where mage damage can be stopped by teammates. Well, you may be a hero mage capable of 1v3ing but last time I checked in 3v3 both sides zone in with their partners and the mage ALSO has teammates to make sure their damage goes off.
The problem with this situation and mage mastery is that no one should have access to legitimate kill opportunities every 30 seconds. The synergy between DF and mastery is too much. People on this forum were advocating for making the mage mastery affect all spells except for deep freeze but they didn't decide on this. They were also going to increase the cd of deep freeze to 45 secs at one point, but also didn't do this. I, and I guess many others, are just happy that they are finally doing something.
But, the reason I think it's o.k. to "gut mage mastery" isn't just because of this. The wider mage toolkit includes such retard proof gems as spammable polymorph in a game with 8 sec dispels and 4 second blanket silence on a 24 sec cd that makes me think you guys will be just fine after 5.4 even if this change goes through. I know you have probably become used to being the star of your own show as a mage and that you might not like becoming a cc bot with consistent damage, but I have to say you will be a damn fine cc bot come 5.4.
It is unfortunate that the strongest classes at the moment (hunters, ferals, eles to a lesser extent) counter mages and perhaps that is the reason why you think mages are not that great. However, this still does not justify the current mage mastery which was flawed from the moment it was implemented in Cata.
As a lot of people have realised, once hunters and ferals are nerfed on ptr, as is the case, the wizards will dominate and mages are going to be a focal point of this impending doom. Hopefully with this mastery change we can stop some of that before it happens.
I hope you have a lovely day.
... Or the problem actually is that mages are pretty bad on PTR due to their damage being nonexistant outside of RNG proccs of FoF and Brain Freeze.
This mastery change doesn't change much about Mages burst. They will still cast Frozen Orb and spam Ice Lance + Frostfire Bolt until the target dies.
Meanwhile though Mages will run around like headless chickens trying to get Polymorphs of while being trained beyond insanity while dealing petty damage from Living Bomb and the Water Elemental.
But yeah, I guess you're right, since Mages have Polymorph and Counter spell they don't desserve to do 30% of the damage a melee class is capable of doing.
Mages should be balanced around doing all of their damage during Frozen Orb and if they don't get a kill they must use their utility to survive until Frozen Orb is ready again.
Good game design...
Or maybe, just buff casts and nerf proccs making freecasting Mages/those who can play terrifying and bad ones the one you face at 1200 rating.