Perhaps a suitably generic term, like "creator", could be automatically assigned to 100 fields since, regardless of what the medium is, AACR2 main entry rules are design to identify the primary creator as Main Entry. It wouldn't work 100 percent of the time--and I imagine getting the exceptions sorted out would be a time consuming task--but it could provide a starting point.
Benjamin Abrahamse Cataloging Coordinator Acquisitions, Metadata and Enterprise Systems MIT Libraries 617-253-7137
