Besides what people said about the captain's power and his relation with the possible antag status, I also find that being loyalty implanted and being an antag are hardly compatible, with the exception of being a loyalist, and it will limit heavily what someone can do when it comes to be an opposite force to the crew. So, if we allow implanted crew to be antagonists, we might as well remove the implants as whole. And due to those reasons, I am against this suggestion and I am voting for dismissal.