While tackling ethical issues in a heaven/hell context the fundamental building blocks are not exactly analyzed, we are operating at the level of "goodness" and "badness" as commonly understood

• Why only humans in this system?
• Why reward or torture after existence?
• Why don't the eternal beings have their own desires, conflicts, outside of humans?
• In what context does the universe exist?
• What is the point of evaluating humans at all?

The end of season 4 - Very thoughtful, made me sad and contemplative. thought provoking in making me come to terms about what I need from my life, and letting go when the time is right, and letting go of others when its right for them. I have to say, i'm still thinking about it now. Very much makes me think of Terry Pratchett and his EOL advocacy.