Add a Long Time Service Release (LTSR)
In big complex networks with thousands of users, it would be nice to set an option on MDM/domain level, to let the users use only the LTSR-version of your Office apps, and especially Outlook. This would be great and a way to avoid the constant download of the “weekly updates” your developers brag about on AppStore.
Develop and test new functions and features in-house. Remove the bugs before release. Do not use your installation base as beta testers!