The ability to draw stuff onto the map instead of into the world.
Currently all script interaction with the map is limited to LuaCustomChartTag, which is shared by the whole force and therefore can't be used to features that need player-specific visibility.
- Extra (chunk) overlays for mod specific content (wind, radiation, crust thickness).
- "Ore finder" that lets player search for ore patches (i.e. by drawing a polygon over them).
- Collaborative marking tools that allow players to draw lines/circles/squares onto the map.