Oni-Goroshi Flickerstrike 1.5mil DPS/ Frost Blades 1.3 Mil

Using this build currently and enjoying it, however I have a question. In an earlier post it said you switched to arctic armor, what gem did you replace to use it. Also, I too have a question about the use of Hatred as an aura. What's the reasoning behind that?

Nice build but is there any possibility to add passive skill selection in here poe.com since I can't use pastebin?

Does anyone have experience with this build but with Slayer ascendancy? How does it compare with ranger variant?
I'm thinking of doing Slayer variant for league starter build in next league, since i presume it should be tankier than ranger, maybe. :)

Anyone know if this got nerfed in 3.2?