You can easily deduce that if a round with pen lower than required to defeat the armor you're wearing one tapped you, it bypassed the armor hitbox. I fail to see how knowing if a round penetrated the armor vs. it bypassed the armor plate would change the fact that you died or help you not die in the future.
alright, do you have the armor plate layout for all the armors somewhere easily accesible?
Getting told where you get hit and if it penetrates the armor plate or not helps with positioning and knowing whether or not "Ahh I was an idiot because I stood badly" instead of just having the kill shot be 5.56 warmaggedon thorax