Prior to the introduction of the Organism table some of the intermediate levels would return results, but these were never accurate, and a major source of complaint because of the untrustworthy  results.  It wasn't even accurate for families. Recorder 6 could only report on the basis of information in the dictionaries.   For example if a new species was added to the list of additional names, it would not have been included when reporting on the family or any other level.  The Organism table now includes a structure for Phylum, Class, Order and  Family which is complete so that now a species added in any dictionary will be included.   

Version 6.23 of R6 will warn if you try and expand on a level which is not supported.

Ideally some of the intermediate levels are needed in the Organism table, and this is something Chris is considering.