The feedback from the community has been extremely vital to getting this new Mastery working well. Iteration is key to us, and Icicles are a perfect example of that.
Overall, we like the core concept of 精通：冰刺
, and are refining things at this point. The next (or perhaps one after that) PTR build will include several revisions. The Frostbolt debuff is now “baked in” (meaning the debuff no longer increases damage taken, but the spells it modified now do more baseline damage), and 水箭
no longer generates Icicles (with Mastery now increasing 水箭
’s damage directly). We’re also speeding up the rate at which 精通：冰刺
launch when triggered by 冰枪术
, as well as a few other tweaks.
We look forward to more feedback from testing that next iteration on it. Thanks all.