Deployment rings: The hidden [strategic] gem of Windows as a service

We only have two rings:

1. Me and my team
2. People who are irritated by the bi-yearly interruption of their work which results from the so-called "Feature Updates".

Upgrading to the next version of Windows 10 is anything but invisible. Even if I manage to shift the upgrade process to midnight, when users log in, they are greeted by the per-user OOBE, a changed desktop environment, and disruptions to their workflow that Microsoft still refuses to fix. Examples:

1. The disappearing fax accounts
2. The chopped off message boxes
3. The printers objects that go offline because the physical printers are now connected to new printer objects created unnecessarily

While our business spans multiple locations, they are autonomous in every respect, except the planning, which concerns the CEO. So, we do have a cloud-based email service, but moving everything to the cloud only imposes monthly costs without adding any benefits.