On the contrary, I dislike premature ethics discussion, where you end up wildly speculating what the tech might become and riffing off that, greatly padding whatever relative technical content you had. I don't want every technical paper to turn into that, ethics should be treated as a higher-level overview of concerns in a field, with a study dedicated to the ethical concerns of that field (by domain-specific ethics specialists).
Is your concern weapon automaton, or animal rights?