Destiny 2 PvP has been suffering from an Aggressive SMG infestation but while it won't be eradicated, it will be brought to acceptable levels in Season 21.
Bungie finally revealed how they will nerf the Aggressive SMGs that are currently dominating the PvP scene in Destiny 2 , along with a nerf to the biggest offender, The Immortal.
Namely, this particular archetype has an enviable time to kill (TTK) and a range that is usually not paired with weapons that excel in the aforementioned stat.
To top it off, these SMGs are not hard to control, which is why they overtook all the modes in higher MMR ranges.
With Season 21, Aggressive SMGs will see a reduction in damage, with body hits going from 15 down to 14 and critical hits (headshots) from 22 to 21.
On paper, these changes don't look like much but it will significantly impact TTK when you start missing headshots now. For example, hitting 10 body shots and two headshots will currently kill a Guardian with six or less Resilience but having the same performance in Season 21 will not net you a kill on anyone, even if by some miracle they came to PvP with minimum Resilience.
Additionally, The Immortal's range will be nerfed by 10, making it less oppressive at mid-range which should normally be the domain of auto rifles and the like.
Combined with the well-weighted archetype nerfs, we would hazard a guess that The Immortal will still be a very strong pick in PvP but it will not be overbearing to the point where every other competitor is close to irrelevant.