Swampy Souls (Biome)

This biome will be a new variation of the soul sand valley. But there's new monsters and new threats to the player and the civilization around it. The first feature would be Cracked Soul sand, if you step on it you fall into it and you start taking serious damage. Skeletons will spawn like normal but after 1 minute of entering the biome they turn into wither skeletons. And they will be riding on a new mob called the wither skeleton horse. Ghasts will spawn like normal but they have a new feature called Ghast nests. Then there will be a new tree called Soul logs and a darker cyan nether wart blocks. Not sure what the ghast nests will have yet but if the developers see my idea I hope they can bring a creative spin on it. Hope you all like my idea. :>