In the meantime I have set up the Advanced Rules for Andorra, Cyprus, Faroe Islands and Gibraltar. You might think, that goes quicker than expected, but there are some speedbumps on the road.
While the files for Andorra, Cyprus and Faroe Islands are verified, the game gives teamcount errors. That should be fixable, although the cups can give a bit of a headache there.
Gibraltar is another issue. The team count for the Intermediate League gives an error that one team can't be found. I know WHICH team, but I don't know yet why.
And this is exactly why I planned a bit more time