Hey Archlever,
There were 4 of us on the application. My husband being the main applicant his said processing with an arrow. Mine and the kids said processing, please wait for the department to contact you. On the day that it was approved about 2 hours before, my husbands changed to processing please wait for the department to contact you. Then 2 hours later finalised. We were not told that a case officer was assigned at all! But I do know that the same person who approved the nomination, approved the visas as well.
We are leaving next Thursday from New Zealand. I hope yours comes through quickly. Let me know if you need help with anything else