On the topic of 'cohesive layered world generation' I can concur what Novado hinted above about the LOTRmod for Minecraft. I've played that mod for many years now and done most of the biome info for that mod's Wiki, so I know quite well how the mods author pulled it off. There aren't many other Minecraft mods, if any, who can match the world generation depth and versatility the LOTRmod has developed throughout the years. I would definitely recommend for VS to have a good look at that, including the world generation option that creates a procedurally generated (by default Third Age Middle-earth ofc) world guided by a pre-coloured map where each colour represents a high level biome ID to be generated. Additional layers are all determined procedurally, like biome variants and other features like (NPC inhabited) structures, flora, fauna and non-structure bound NPCs. I'd see opportunity to create more varied 'layered' world generation than presently embedded in the LOTRmod, but goign by similar design principles.
On the topic of 'cohesive layered world generation' I can concur what Novado hinted above about the LOTRmod for Minecraft. I've played that mod for many years now and done most of the biome info for that mod's Wiki, so I know quite well how the mods author pulled it off. There aren't many other Minecraft mods, if any, who can match the world generation depth and versatility the LOTRmod has developed throughout the years. I would definitely recommend for VS to have a good look at that, including the world generation option that creates a procedurally generated (by default Third Age Middle-earth ofc) world guided by a pre-coloured map where each colour represents a high level biome ID to be generated. Additional layers are all determined procedurally, like biome variants and other features like (NPC inhabited) structures, flora, fauna and non-structure bound NPCs. I'd see opportunity to create more varied 'layered' world generation than presently embedded in the LOTRmod, but goign by similar design principles.