Oroonoko is a story about a tragedy of a good man, focusing on his journey from royalty in Coramantien to slavery in Surinam. He is a natural leader, respected and values the right thing but also easily manipulated. Coramantien's power-hungry court betrays him and that led to his downfall.
The idea of a centralized setting is to focus on the storytelling like that of the one around the fire, where generations gather round to tell or listen to the story. It creates a sense of "fableness". The Delcorte is an ideal setting for this approach. With the semi-circular configuration and its environmental elements of the cosmos, the trees, the water, and the civilization that surrounds it. These act as the set itself.
The ring levels were to explore the power dynamics that can transform from one world of luxurious and adorned to another that is harsh and rough.