Created this to test the current possibilities and limitations of Finsweet's Attributes system (which, 💜, BTW). For my use case, I really need to combine multiple collections and filter by field data from multiple multi-reference fields in each collection. I also used Select to add filter options to select fields. As you can see from the Implementation Process, I'm unable to get NEST to function with Combine. If you crack this nut, PLEASE let me know!

finsweet, attributes, nest, combine, select, filter