As a manager of the data mirror,
I want to know when the mirror was updated the last time,
so that I have an indication that the sync is working fine.
As I understand today, the information "last update" is only indicating the date for a file upload, but not for the latest API update. This is IMHO misleading.
Even better may be: include a diagram into the "data sharing dashboard", of how many records are upserted / updated / deleted / ... over time.