Here at the Wikimania conference, there is a lot of talk about Wikidata and Wikibase coming to Commons, but it is not clear how or when. Since it's very abstract still, it is not clear whether one should be happy or scared.
I see that interwiki links for Commons categories can in some cases be covered by Wikidata. I just removed all the interwiki links and "Sister Wikipedia" links from the Category:Sweden. The result was not obvious at first, as all interwiki links seem to still be there, now pulled from Wikidata. But now they go to Category:Sweden on Wikipedia and not to the article Sweden.
https://commons.wikimedia.org/w/index.php?title=Category%3ASweden&diff=1...
Is this something we should start to do on a large scale? Or something we should avoid at all cost, because we prefer to link Commons categories to Wikipedia articles?
It is confusing that even though Wikidata claims to represent concepts, the country Sweden has two different nodes for the Wikipedia article, https://www.wikidata.org/wiki/Q34 and the category, https://www.wikidata.org/wiki/Q4368475 both representing the same country.
Can I find out how many pages on Commons pull interwiki links from Wikidata? Did this count increase by one, when I made that edit?
The category page also contains short descriptions in a handfull of languages (en, de, fr, it, ja, nb, sv, fi, uk), but these could also be better served from Wikidata. What do I write in the Category:Sweden page to pull the short text descriptions from Wikidata?
Wikidata currently has short text descriptions of Sweden in only 4 languages (da, de, nb, sv) and they differ from the short text descriptions on Commons. For example, in nb (Norwegian bokmål), Wikidata says "Kategori:Sverige" whereas Commons only says "Sverige". Shouldn't all categories that pull their interwiki links from Wikidata also pull the short text descriptions from Wikidata?
Since this category represents a geographic entity, its center coordinate should also be given as an "Object location", which is currently missing.
https://commons.wikimedia.org/wiki/Template:Object_location
But perhaps that information should rather be inserted into Wikidata? Even better than the center coordinate would be the border outline from OpenStreetMap? In OSM this is relation 52822, which also provides the name in many different languages, www.openstreetmap.org/relation/52822