If such an Everglades map is to be in the game, what if it's just the Tropical biome? Because the Dominion Biosyn Expansion's sanctuary map is not a new sixth biome as the rumors say, but the already in-game Alpine environment setting. It's just that it introduces new terrain textures and paintable foliage options.
So, while not excluding on the possibility of a "wetlands" environment being a complete separate biome, what if it could be the already in-game Tropical biome with new terrain textures and foliage type brushes? After all, the Tropical setting does have whether effects that would perfectly match the whether of the real-world Everglades.