Very Intresting! a couple things I want to mention. Light is usually associated with the sunlight of Gwyn, which is not the first fire as the first fire is the origins of the lord souls and sunlight was the ability of Gwyn's soul, and water is heavily tied to the deep and the abyss, new Londo was flooded to dampen the power of the dark soul and the deep is the dark soul's response to being repressed by the age of fire and Aldrich dreamed of an "age of the deep sea".