Thank you for your feedback. We are working on customer controlled failover for both disaster and DR drill scenarios. Please contact email@example.com for more details about enrolling in a private preview, and for any further questions.Art Khlobystin commented
Customer initiated failover is in preview in US West 2 and US West Central - https://docs.microsoft.com/en-us/azure/storage/common/storage-disaster-recovery-guidance. Regional expansion is in works! Please contact firstname.lastname@example.org to get enrolled.