I have been playing Destiny since y1 and ever since the release it has been a 2 step forward, 1 step back dance. Bungie nerfs a lot of stuff, and buffs 1 or 2 weapons.
Instead of nerfing, they should start buffing stuff. I think a good direction to take is to make primaries what they used to be. Two years ago, primaries werent something you would switch to when you run out of ammo. I miss using autorifles that weren't bullet hoses.
Another thing that could help this process and something brilliant I heard on this forum many times before is to add a primary only playlist.
In conclusion, instead of making things worse, why not bring everything to a level playing field.