Okay, let me preface this by saying that I don't have Luna's or Not Forgotten, and I've been filleted by them more times than I can count. The one thing that makes these weapons as good as they are is the Magnificent Howl perk. Without Magnificent howl, a god rolled Trust is better in almost every way to both Luna's and Not Forgotten. However, this doesn't mean that these weapons are unfair. This perk is the reward for a very high level of competitive play. The problems arise when people take a weapon from very high level competitive play and introduce it into lower level play, creating an imbalance. What Bungie need to do, is introduce weapons that have a similarly powerful perk in high skill levels or in other activities. Make a better version of Trust (like Breakneck is to Hazard of the Cast) and make that available through playing a lot of and being very good at Gambit. Make a weapon like Luna's and Not Forgotten that you get for resetting your Valor rank Twice in a season, this weapon's stats even on a god roll, would never be the same as Luna's or Not Forgotten, but would be a mixture of the two. Create a weapon that you get through doing the nightfall in a certain time, that also has ridiculous perks, that just effect another archetype of gun. We already have an auto rifle with an awesome perk, A Scout rifle with an awesome perk, and two hand cannons with an awesome perk available through playing certain activities, broaden the activities and broaden the rewards. Going forward in Destiny, we as a community, need to start moving away from "Nerf this" or "Nerf that" and we need to start moving towards "Buff these to compete with this and that" Remember when Graviton Lance got really good? Then Bungie Buffed or Released new weapons and perks that kicked it out of the meta. (This is also Posted On r/destinythegame) #BuffsNotNerfs
It shouldn't need to be nerfed. If the weapon was only obtainable in season 4. Now it is too available and ruining variety in the crucible.