Chaos spawn grab could really use some more pronounced audio when the spawn actually activates the attack as its to hard to evade without knowing that it is coming. This is especially a problem as players cannot always keep the camera on the chaos spawn but also need to watch for other threats such as trappers, hounds.
Other problems with the grab are the hitbox isn´t well scaled to the actual hitbox of the arm this is most prominent if the player dodges left of the arm. The grab can also get players through walls or behind objects.
Finally the grab is supposed to make the enemies that aren´t specials stop attacking the player, but oftentimes if enemy´s have already began their attack chain such as gunners, reapers will continue firing upon the player despite being grabbed. This may not be such a problem however if everything else about the grab was more balanced, clear.