Nerfing/buffing weapon really is how you promote variance. It allows other weapons to take thier place and have their own time to shine, this is literally exactly what has happened. Shotguns just took smgs place in the meta, therefore basically breaking SMFs as they are now completely useless. Bungie needs to have an active eye on the PvP scene if they want it to flourish, they need to regularly change and balance it without affecting PvE numbers, they need to put out patches with proper number that tell people whats going to be viable and whats not. And if people arent happy with a certain change, well hey guess what its probably going to be changed in a upcoming regular balance patch. LITERALLY just look at how league of legend does this. And this games PvP would be incredibly good, promote variance and be refreshing.