The worrying issue for me largely isn't nutrient based, it's that widespread erosion is cyclic, and no matter how "well drained" it is, there's very little you

The worrying issue for me largely isn't nutrient based, it's that widespread erosion is cyclic, and no matter how "well drained" it is, there's very little you can grow in sand. Additionally, dust storms have well known health consequences when they get large/common enough. I'm not a meteorologist, so I can't speak to the likelihood of something on this scale, but there's still a strong cultural memory back to the 1930s to keep a handle on runaway erosion.