It would be beneifcal to allow the parsing of Arc element names to PDF metadata as part of exporting or printing an MXD.
For exmaple, an element labelled "Map Title" or "Description" which may be different to the filename of the MXD.
If this information was parsed to the PDF, it would allow third party products to "use" these fields to populate fields in a Sharepoint list for example.
Currently none of this data is parsed as part of the PDF printing or exporting process from Arc.