Natural world blocks generating devise that can make dirt sand and stone from for example plant fiber.
That is included in Creative Tools Pack, the Cardboard Box Blocks crafting station.
If you want more I can also recommend the admin tool WorldEdit, it's chat command based, but the most powerful block editing tool we currently have for Eco.
A eazy way to make a world with more ground depth.
Afaik, the most simple way at the moment to do that, open /Eco Server/Config/WorldGenerator.eco and search at the beginning of the file for
The 100 behind Height is the overall world height, the 40 is the sea level, measured in blocks.
E.g.: I prefer to have less high mountains but deeper ocean and ability to dig deeper, so I changed WaterLevel value to 55, now the max mountain height is 45 instead of 60 blocks and ocean/dig deep is 55.
Changes only affect new generated worlds.