So, I have created a map (my first map that kinda looks good). the main part of this map is totally flat, so it is good for building grid like cities. There is a great amount of water, with multiple sea connections leading to your future city, oil, ore, wood and fertile grounds are present, same as multiple train tracks. I recomment using the 81 tiles mod for this map, considering the mountain and the islands are just out of reach, with the vanilla tiles, or the 25 tiles.