When the values for statements are the same in Wikidata and a Wikipedia, there is no longer a need to keep that information locally. The argument against keeping information locally is that when data needs an update it only needs to be updated in Wikidata.
This is probably the least disruptive way forward.
- Wikidata needs to include all the data of the data types it supports
- we need functionality that compares data in a Wikipedia and removes it when it is the same
There is something for everyone to do.