If Arc doesn't get gutted in the notes still leaning to Arc totems for a starter, played the shit out of minion builds in Delve so might want a break from that.
Yep, you want to pick up increased duration and AOE nodes from the tree. Basically it's a DoT build, the snare effect is also really nice for keeping shit off you(though looks like slow effects are getting a cap).
13-2 was pretty fun, if a little on the easy side. Story didn't make a lot of sense until the info dump at the end, but at least the villain had clear motivations.