There was always two exotic weapons in year one that regenerated rounds, Ice Breaker and Invective. The Ice Breaker regenerated 1 round at a time and the invective regenerated 4 rounds at a time but at a much slower pace. In year two only one of them was moved over which was the Invective. As of now the invective has a ton of range when fully upgraded, a high firing rate, but not much impact. Point of the matter is should the range be decreased or the impact increased?
Neither it's fine as it is. If bungie nerf the range on shotguns anymore, people just won't use them and that would be a shame