The addition of bib fields enrichment for general electronic services has been helpful in creating service availability rules for GESes, but there is no way to configure enrichment based upon content in the MARC record leader. This is where primary resource aspects are noted, such as record type, bibliographic level, and whether a resource is under archival control. Being able to use this criteria when displaying or hiding a service would be much easier than the convoluted and imperfect workarounds we've resorted to.