With Sunset Invasion active, The Inca and Aztec empires will have the High American tech group, as well as large empires in the New World.
Unique national ideas for Aztec, Hashashin, Inca, Israel, Jomsvikings, Karlings, Knights Templar, and the Roman Empire.
It is recommended to pick a nation, start a game, and immediately save and restart back to the screen that lets you select a nation in order to have the actual generated ideas appear). Nations without equivalents gain randomly generated ideas (though at the moment there appears to be a glitch where generic national ideas appear on the launch screen, as it seems ideas are only generated upon first launch of a game using the generated mod.
Nations that have an equivalent in EU4 gain their national ideas.
Flags are carried over for the nations as well for CK2 nations that have no equivalent in EU4.
Dynamic country tags are created for CK2 realms without equivalents in the base EU4 game.
A CK2 save (from any year) is turned into a mod for the EU4 start-date of 1444, allowing the player to continue on to 1821.