Fulgora Rail World puts more oil ocean between mining areas and makes distant scrap richer. Longer routes make trains and remote outposts more useful.
New games default to 300% Scale and 66% Coverage on Fulgora. You can change both in map setup. Scrap stays at normal richness near the starting area, then increases without a cap: about 2× at 4,200 tiles and 3× at 6,800 tiles.