[Snake]

I believe that increasing Critical Damage by 0.5% per 1 point is really the way to go here. A bonus to HP is also fine, but I second that.

Though, I also believe Heavy Armor should have something to help lower the chances of Critical Hits landing, or lower Critical Damage akin to how Unarmored has Evasion to lower the numbers on unavoidable damage. Tanks have already been nerfed, so they will probably suffer a lot if out of nowhere Critical Hits start hurting more than they should.