Yes it is stupid because the ways are pretty different but the wound is the same, i don't think if you tear off yor arm with brutal force it looks like you cutted it, you can even try
However i am always against cesures.
Yes it isn't required but you miss al the succolent citations from Xenogears
I saw, Elly, Fei/Abel, Citan, Billy, Vanderkaum, Big Joe citations but I want absolutely see Id in Xenosaga, they cannot deny it to me!