These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Canon Sue / Jerk Sue: Joshua Calvert is arrogant, irresistible to women, a starship captain, and finally banishes the possessed. He has unfortunate elements of this trope, but thankfully the fact that there are so many characters means that this needn't get in the way. Nevertheless, some people find him irritating - even Hamilton himselfcalls him a "prat".
Nightmare Fuel: Possession. The Melange. The Beyond. Also, being a ghost. If you don't want to give up your mortal life, you spend an eternity in the Beyond, where 5 minutes feels like an eternity, all the other souls are screaming to get out, and when you do get out, the souls in the Beyond compel you to open up bodies for possession by souls from the Beyond.