Attacking Plans

Plans should be one of the things in the main tab. These plans you would show a world map, and be able to connect arrows from a province to any other province, and to add arrows, first you click the starting province then click the next province, then you may curve the arrow, to show a flank/ so there are not just plain strait lines everywhere. The ability to share plans in the diplomacy should also be an option. So you don't always have to explain your plans to your allies all the time.

The arrow part might be a little hard to do, but it would be a very unique and good addition to the game.