Skitterlings instead of Volge at Iron Demon? At a Major Scrapper Arkfall, after repair the Arms / Tentacles are repaired they are able to attack? That the repair bot is a lot harder to get behind. The Scrapyard coop mission has a Arm / Tentacle working / attacking in the Boss segment. And the best one, So many Dark Matter NPC's, that it's actually worth doing those arkfalls.
Just my impressions. Or maybe I'm imagining things.....
