Make the print large. So you can see it when you put the book on the floor.

Print songs that have lots of choruses. There are some solo songs that sound bad
when everyone sings them (mostly off-key).

Someone should do a folk song book with basic vocal harmonies. Maybe just two or three parts, not a glee-club approach. Some could have just descants or counter-lines.

Put the songs in a contextual or categorical order with a few basic lines of accompanying information on the songs, meanings, etc.

I think there are songs that rely on accompaniment patterns and don't hold up as tunes
without them. There are certainly songs that rely on "production value" and sound sparse without it.

Frank