I study the health and sustainability of communities and cyberinfrastructure with a primary focus on citizen science, thus much of my Wikidata work is focused on supporting citizen science in Wikidata. Check out Wikidata:WikiProject Citizen Science or Wikidata:OpenStreetMap to share your ideas and help set focus of needed work.
My interest in Wikidata is to expand the completeness on topics used by citizen science cyberinfrastructure. I'm also interested in database key linking for making Wikidata a research infrastructure for linked open data while simultaneously building robust data for Wikipedia to enable scalable trusted data and enhance maintenance tools development.
I've mainly focused on Michigan Lakes GNIS ID cleanup and import and cleaning up en.Wikipedia's Lake infoboxes as well as linking to OpenStreetMap. To give a reference of what the completeness can build.
Check out the osm.wikidata.link tool for helping link geo items to OSM.