I tried using necrochasm. It's DPS was just so low! Risk vs reward wasn't there. Necrochasm you had to stay close for an extended period to lay down a constant stream of fire while guns like fatebringer you just needed to pop from cover for a second and it hit as hard as half a clip of necrochasm. Even with the update I'm betting necrochasm will still be underwhelming in pve. Might become a pvp beast tho!