I am looking forward to that, it may take gunnery in terms of efficiency a notch to boarding again. If i understood that correctly, only penetrating hits will influence your crew in any way.
Imho this will give the crew the importance, it deserves instead of being a mere number at the bottom left of the screen.
But SoulPYTHONs question is more interesting to me: may the wood type the ship is made of have influence on that in terms of generating splinters?
There is no autokill. IF a shot penetrates, it will affect the crew IF it hits --> wounded, morale drop, scared, dead, unwilling to fight.
turboedit: morale drop/fear/wounded were not considered imho, yet.