So as you might be aware, they’re discussing potential changes to armour pack (citation)
Jake (OWL “talent”) has suggested armour scales based on maximum base hp. It could be 20% of your maximum base HP as added armour.
150hp Hero: 30 armour. Total: 180 hp
200hp Hero: 40 armour. Total: 240 hp
300hp Hero: 60 armour. Total: 360 hp
400hp Hero: 80 armour. Total: 480 hp
500hp Hero: 100 armour. Total: 600 hp
600hp Hero: 120 armour. Total: 720 hp
This makes armour packs less useful on squishies, such as Tracer, and more effective on Tanks. This nudges Brigitte away from a dive healer (she’s the main dive healer in OWL) and encourages her to be played as the “tank bulker” when the enemy run high-burst damage heroes like McCree or Ashe.