Organize Parameter Fields in Display Folders

I came up with a sort of solution for this...adding it here in case it is helpful to others...Field parameters can be directly edited in the DAX, and so the 'table' can be created with a large number of rows, then additional columns can be added, which allow you to group the fields (rows in the DAX table)in whatever way you like.  Then in the report, you can add slicers or filters to each report or visual to choose which part(s) of the field parameter should be active. This allows you to condense how many field parameter tables show up in the navigation and the fields pane.