According to D&D canon, certain layers are already defined. To wit:
1 – Pazunia, is a vast arid desert full of deep pits. Clearly this is where Hollywood movies are conceived.
6 – Realm of a Million Eyes is the beholder goddess – there are eyes everywhere. I hope this is where people who work government surveillance (RCMP anti-protest operatives, Homeland Security types, and their equivalents in other countries).
23 – **The Icy Wastes ** is “a bitterly cold plane of miles-deep ice”. Clearly the final resting place of evil Winnipegers and citizens of Churchill, Manitoba.
45, 46, and 47 – the Realm of Azzagrat , kindom of Graz’zt, king of deception and seduction. It is in those dark pits that Public Relations strategies are bred.
66 – **The Demonweb Pits ** – home to Lolth the Spider Queen, the Elven Satan. For people who write really bad Legolas fanfiction.
74 – Smargard is a jungle layer of a snake god. Can’t think who I’d throw there, so we’ll designate it miscellaneous – i.e., anyone who annoys me on a given day.
88 – Abysm is the layer of Demogorgon, lord of dark knowledge and insanity. I throw anyone who quotes Foucault or Derrida in there.
113 – Thanatos is a grand city of the undead, pupulated, I strongly suspect, by supporters of Lyndon LaRouche.
222 – **The Slime Pits ** are home to Jubilex, King of Oozes, and Zuggotmoy, Lady of Fungi. I consign the souls of many sentient beings here the rare occasions I have time to do the dishes.
348 – The Fortress of Indifference, home to everyone who doesn’t vote, where they will be consigned to listen to Lyndon LaRouche speeches for all eternity broadcast from Thanatos.
489 – The Noisome Vale, home to that popular tourist attraction, the River of Worms. I can’t think who to put there, so I’ll let anyone who wants it have it.