This mod brings the modern world for Crusader Kings II. The mod is still in its version 0.0.1 so there is still much to be done. All countries in the map of the territory, excluding Qatar, San Marino and Andorra, can be played. New religions and new cultures are present (both without deepening yet). It is planned for the next new updates events and decisions.
This sounds promising and very interesting. Things to add: republics and larger world map. This is promising because I haven't actually seen a modern world mod anywhere and it is interesting because of the same reason, and the fact that the map seems well designed.