It would be nice to have a dump which contains just the data from the pagePropertiesRdf repo setting. Per default that is the number of statements (wikibase:statements) and the number of sitelinks (wikibase:sitelinks) of an entity.
Using that data, redirect data (see T98320) and the JSON dump, the RDF dumps could be derived from the JSON dump. This dump might also be useful on its own.
This should a RDF dump so that it can just be concatenated to an entity dump missing the "page prop" information.