Some project managers would welcome getting less email notifications on job status changes. They want these notifications to be sent to the subsequent provider only to avoid being spammed by notifications.
Job status change notifications are always sent to the providers and also to the PM.
("Notify job owner when job status is changed" serves a similar purpose, but apparently with shared jobs.)
An option to disable job status change notifications sent to job owners.
When a translation is set to Completed, Linguist doing the review should be notified, but not the PM.