Topic on Talk:Reading/web/Projects/Wikidata Descriptions
i wouldn't put "edit this" there. It will act as a lightning rod for people willing to edit, while they already are in the edit interface. People won't be able to make the distinction and just get confused. Just make the area of the subtitle clickable and then move the user into a separate edit flow.
Also, when adding extra editing flows like this, please consider how the wikidata community could patrol those edits efficiently.