I feel that most of the issue is the duration that Firebolt grenades remove you from a fight. The long burn plus the recovery time basically makes you useless in a fight till fully recovered. The fact of the matter in Destiny is that in the majority of firefights you [i]will[/i] take damage. And after the burn a shot from anything but an auto (and maybe some autos) will kill you. Just a long time to be out of a fight. Also for those of you saying "Just tell a teammate" it doesn't really matter if your teammate knows if you're now useless in the fight for about 15 or 20 seconds