You are literally reading my mind m8, firefly should be a distraction rather than a useless bit of damage. I try to use it and it actually took effect once in pvp, your man only took somewhere between 80-90 damage, useless. Well you could body shot him but I do headshots anyway as I'm used to headshots. Flinch could be very useful instead. And also the explosion perk on the icebreaker should be buffed to be ABOVE the normal firefly radius, it's BELOW by 2 meters from firefly as of the dawning.
I think hereafter had it kinda right with its special ability and radius but I would like to see the flinch/ads reset from it with maybe 50 damage on enemies within 4 meters (damage falling off in deltas of 12.5 per meter away from target)