Hierarchical Facets and Taxonomy

Has anyone investigated Hierarchical Facets and Parent-Child taxonomies? (Discussion: http://www.mail-archive.com/general@simile.mit.edu/msg02723.html Samples and limited documentation: http://simile-widgets.org/wiki/Exhibit/Hierarchical_Facet ) . This would be a huge win for complex taxonomy browsing.

If there were a way to (in the module settings) select Taxonomies to be "available" for parsing. The module would then build )and cache?) the relationships (by tid? name? both?).

In each exhibit node, an author would select from this list and then how the View is presenting it (tids vs names? Would anyone use tids in a UI?), and the module would build out the json snippit to create the structure for exhibit, like below:

{
    items: [
        {   type: "ArtworkSubject", label: "nature" },
        {   type: "ArtworkSubject", label: "landscape",             subtopicOf: "nature" },
        {   type: "ArtworkSubject", label: "valley",                subtopicOf: "landscape" },
        {   type: "ArtworkSubject", label: "hill",                  subtopicOf: "landscape" },
        {   type: "ArtworkSubject", label: "seascapes and coast",   subtopicOf: "nature" },
        
        {   type: "ArtworkSubject", label: "people" },
        {   type: "ArtworkSubject", label: "adults",                subtopicOf: "people" },
        {   type: "ArtworkSubject", label: "man",                   subtopicOf: "adults" },
        {   type: "ArtworkSubject", label: "woman",                 subtopicOf: "adults" },
    }
}

(Snagged from the samples above; http://people.csail.mit.edu/dfhuynh/projects/hierarchical-facets/data.json)