Well the only reason for that is cos i love having KM up all the time. It does overproc sometimes but on 4/5 sometimes i dont get enough if i get lucky with Rime proccing free Howling Blasts and stuff. Only reason for 5/5 is so u are almost always ready to pop that Howling Blast with KM and have insane AoE burst.
Im testing some minor changes atm, but since its holyday season we are not raiding that much, but i do know that if u put 1 less point in Black Ice u lose 20k dmg per 1milion frost/shadow dmg done. I personaly love 5/5 KM but going 4/5 is fine, it wont make any huge diference.
Again, Il most likely post a separate guide on each spec and fix some mistakes i made in this post soon... January 3rd or 4th. Will see how my free time lets me.

