How about notifiy admins before you upgrade their tenants to a new Unified Onedrive client BEFORE IT HAPPENS?
I have already called Office 365 support to find out if I missed a Notice or alert or email or anything else and I was told I was notified in any way. Some of my clients had onedrive for business stop working and forced to upgrade to new unified client without any warning to me or them. We checked all settings and I should not have been used as a test case with no notice. THIS IS NOT ACCEPTABLE.