4. Executioner – never use it. But almost any enemy capable of sustaining a wound, would have one by 33%. So what you propose is actually a nerf.
Actually, I remember having a wildman who was hit on the head by a hedge knight with a two-handed hammer, and it completely destroyed his mailed nasal helm and took 93 of his 98 hit points in one go, but he didn’t get an injury (so I assume there’s a % chance, probably high, of an injury when the threshold is met) …
