Finished layer 6 on my Hunter on live; got Elder Longbranch for the boss in Coldheart and died to him a couple times before I got it down, but overall it hasn't been too bad as MM.
Did layer 6 on a iLvl180 premade Warrior on beta; the bosses/elites were harder, and in some cases only possible because of the Condemn knockdown anima power.