Hoi,
At Wikidata we often find issues with data imported from a Wikipedia. Lists have been produced with these issues on the Wikipedia involved and arguably they do present issues with the quality of Wikipedia or Wikidata for that matter. So far hardly anything resulted from such outreach.
When Wikipedia is a black box, not communicating about with the outside world, at some stage the situation becomes toxic. At this moment there are already those at Wikidata that argue not to bother about Wikipedia quality because in their view, Wikipedians do not care about its own quality.
Arguably known issues with quality are the easiest to solve.
There are many ways to approach this subject. It is indeed a quality issue both for Wikidata and Wikipedia. It can be seen as a research issue; how to deal with quality and how do such mechanisms function if at all.
I blogged about it..