For easy retrieval, it could be helpful to define calculated properties, i.e. properties whose value are derived from one or several other properties.
Support could be limited to or should include also the SPARQL endpoint. Given increased functionalities of WQS, this may not be needed. On the other hand, it could make it easier to build queries for users.
On Wikidata: https://www.wikidata.org/wiki/Help:Data_type#Calculated_property