Possession and pillars for DPS? Are you kidding? Avatar+RSoX+BtD=DPS
Try a hybrid build now. Berserker is definitely stronger now than before, and especially with a demo, guard and bs in group. I've done amazing crits as Berserker. http://goo.gl/lUdHFk
With the T5 rune, it becomes kind of a problem with all the uncontrollable burst. T5 finesse hits can be 20% extra damage alone.