Can one take the existing map and enlarge it – say add another hemisphere? Or do the maps have to be the same size? Also, I’ve always thought it would be cool to create and exchange maps with others for the basic scenarios, but with different continents for Australia, the Americas, southern Africa, etc. That would make exploring more of a historical simulation, after all, when playing a real-world map, I can’t mentally unlearn geography. I know where to send explorers to that they find land and civilizations.