Originally Posted by
Kiqjaq
Because, as Ghost Crawler said, it's not the panacea that people think it is.
Even when they wholly separate a spell between PVP and PVE, as they did with Deep Freeze in cata, there were people whining about getting nuked to death in 1 deep.
They have all the levers they need to balance the game for both, but the one constant of game design is that players are smarter than any dev can imagine. They designed a rotation for Arms Warrior, and people got annoyed at how punishing it could be. The devs insisted we were simply trying too hard to min/max, but in the end they had to give Warrior a slight nerf because players were "too good at the rotation". Something similar is happening with Arcane. Players found Scorch and found a way around the limits of the class to do more dps than they ought to, and now the devs had to take away our toys because we wouldn't play nice.
That's the constant battle for game design--giving players fun toys but not letting them run amok--and there's a balance to be struck between pulling the rug out from under players on a weekly basis versus simply leaving imbalances in the game for the sake of stability. If they wanted, they could feasibly make the game significantly more balanced by making minute changes on a weekly basis to get rid of slight imbalances. But players have time and again shown that they hate that much more than they hate slight imbalances, and so Blizzard historically steps in when things are out of hand, and adjusts during major patches.
They're doing so a bit more frequently lately, what with the cries of imbalance from all corners, and threads like this are the collateral damage.
I really quite dislike getting my class pulled from under me all the time. Poor Arms Warriors, I'm glad I jumped that ship and the Mage ship and went for my DK, which has remained strong, playable, and nearly untouched for all of MoP thus far.