This week we enabled geo-shapes service (non-production only). Given Wikidata ID(s), maps service can give you associated geoshapes (as topojson). Moreover, you can actually give it a Wikidata SPARQL query, and as long as each ID is unique, it will get geoshapes for each one, and keep other values as TopoJSON properties.
What this means is that once its in production, you can do this:
It's a bunch of maps (using graph extension), that are dynamically generated by a template! You just give it a country and a few more optional parameters, and it draws the regions, and can show images from Commons if you hover over the state capitals (black dots).
Next step - adding some interesting data on top of those maps, like election results or rates of air pollution. That data will hopefully be stored in a central repository, together with non-OSM geoshapes (like historical country outlines, bird migration paths, etc).