Aaah, I misunderstood you. Glad to hear it's just compatability, and if knocking out removes them from the witnesses (although the last witness system is pretty poor anyway) then that's another reason why those people with mods that enable childkilling will be more inclined to not kill them.
That said, let's stop talking about it before anyone gets into a debate about morals...
I'm glad to see your little anticheating mechanism, and I'm really liking the idea of using Dragon Masks to hide your identity. How conflicty is this likely to be? (yes, that's a word now)
As in, does your optional mod edit dragon masks, or does it ask "is the player wearing [a dragon mask], if so, hide them" (to put things in the most pseudo of pseudocodes

)?