If I was able to help I would, unfortunately I have no knowledge. I hope you can find some help because it would be amazing to have all NT in the game.if someone would help with dlc and graphics imports, I think I should be able to get all national teams in fifa 22 since I'm editing the games for years, mainly fifa 16 database are really usable to complete the database and most of graphics can be used. But that would imply replacing teams from lower leagues, so that would be only a tournament mode version but all 211 national teams inside
Atom I think did something similar to the ENT for FIFA 21 adding a full road to the world cup game tournament mode.
Mashing these two amazing project together would be a dream. And it's a shame players have to provide other players this experience since EA doesn't care anymore about a full FIFA World Cup game