Idea for a new Biome "Nocturnal"

Hello everyone, and thank you for taking your time to read this! As the title suggested, I'm pitching an idea here for a new biome!

Okay so, the 'Nocturnal' Biome: A vast, dim biome that haves an overlaying mist or fog flowing over the ground blocks. New type of tree's growing there called 'Snags', which is basically a dead tree, with long branches and no leaves.

The player's sight will be slightly decreased when in this biome (to be compared to the deep dark but lighter) but can be negated by a light source (1 light source = 64 blocks). Sunlight and weather changes will be the same as in any other biome.