Grava’s charge is a good ability to promote active gameplay: if your build doesn’t have enough skill disrupt resist, you need to manually dodge it and continue fighting.
Due to recent aggro changes, at least in Crucible, monsters started to behave unintendedly, the infamous aimless bouncing around the player trying to find the path to the target.
Before the aggro changes you needed to dodge at most one Grava charge and then withstand the normal fight against 4 nemesis. But after the aggro changes Grava, as one of the enemies with bigger hitbox, is a common victim of that bouncing around. And once he starts bouncing he triggers the disrupt charge again. And the player doesn’t always have an opportunity to dodge it again because they are already surrounded by the enemies. One small interruption, even with capped CC res, - and you are unable to avoid disruption and you die because all your sustain is turned off when you are surrounded by 4 nemesis.
Picking out Grava to fight him first is also not an option because due to forementioned aggro changes every enemy, even when facetanking them, can start bouncing around with enough enemies near the player.
Disrupt charge has very short cooldown that plays no role in solo fights in SR or campaign. Maybe increasing its cooldown for Crucible can work somehow. But the problem is range. Never before Grava did more than one disrupt charge against a facetanking player in Crucible. Now he can do it multiple times. And his charges are now my most common deaths in Crucible, followed by deaths to white chaos shard spawns by Thall’Nosh.
I’ve died to Grava charge with phys Warlord that facetanks Callagadra.
TLDR: Due to aggro changes Grava now often uses his most dangerous attack multiple times, instead of one, and in sutiations where it’s harder to avoid it.