I am interested in working creating websites ready-to-use based on Wordpress. Would you say that focusing only on developing WP themes would be too narrow? What other services would be worthwhile offering, related to the main concept (ready-to-use sites), in terms of $$ and volume of demand? Cheers
You can make ready to use sites based on broad subjects like "dentist supplies" or "dui tips" and stuff like that.
You could offer a wordpress setup services for people who want to use wordpress but aren't very tech minded and also offer to upload and install plugins etc. Logo customization / template modification might be needed for certain people also.