The import heightmap THEN have it spawn roads and prefabs is nice. Would you consider making it so that it will import ANY piece and only generate the missing pieces?
Like I could have just the heightmap, and it creates roads, biomes, pois, but if I had the heightmap AND biomes, it would only create roads and pois, etc?
That way we could flexibly only use the parts we need?
I could go backwards and just edit the splat3 after you create it, but I'm lazy...