Blackhammer rewards skillful sniping. You have to get 3 precisions in a row within a short time. If you miss 1 precision everything unique about the weapon is gone. With the lack of unflinching and the ambush sight instead of the Shortgaze it lakes quite a bit of skill to be consistent when enemy fire is coming across you. It was only good against bosses with large precision areas. It was near useless against just simple enemies because it would be wasting ammo you could be putting into a boss. It was made for boss slaying. They knew what they were doing when they made that perk. The reason they are nerfing isn't because it is op (which it's not). It is because they are wanting Taken King weapons to be more desirable than what already exists. It's all about money to bungie.