I've got nothing to contribute, other than that this story really helped resolve some personal crises on identity. This part especially:

"Even now, you are not quite correct. The soul is not a {computational process}, but a {specification of a search space} which describes any number of similar {computational processes}. For example, Shen Chun-lieh, would you still be Shen Chun-lieh if I were to cut off your left arm?"

Thank you for writing this.