It seems to me a rather strange decision of the English Wikipedia to create a special template for what Wikidata does (T248457). This worsens the already complex integration and localization as much as possible. It also breaks the user experience of the ContentTranslation, as you have to create an unnecessary template in other Wikipedias.
It seems to me that the best way would be to integrate description changes into the workflow of other projects:
- Notification of a change in description in the watchlist
- Notification of a change in description in the RecentChanges
- Possible to see Wikidata description in the article
- Possible to change the description from action=edit
I like how it is implemented on Commons:
Something similar can be implemented in all projects.