Currently in CTA Type layouts, an admin can configure Search fields for Lookup fields/attributes to custom objects which allows users to search for records by the values/characters within that object’s Searchable fields.

I would like to be able to see this same capability extended to Inline Report Editing so that users can search for a lookup field custom object record to which they can associate the Report object’s record. This type of parity across features is crucial in making this platform fluid and intuitive.