Provide a method to delegate access to a beneficiary upon death, like Google's Inactive Account Manager
OneDrive accounts may contain very sensitive and important information, especially when combined with the use of the Personal Vault. For instance, if you store your will in your Personal Vault, then upon your death or presumed death a beneficiary should have a method to automatically gain access to your account. Google accomplishes this with the Inactive Account Manager. It is not sufficient that a family member can submit legal documentation as I should have the ability to decide who gets access to my account and when, and I can choose to accept the liability that comes with that decision.
This is important. E.g. I want to be able to add "Next of Kin" to be able to get access to specific services in my O365 account. Getting access to Onedrive is probably most important to ensure my family photos etc are available after my death. Google has solved this in a good way with their Inactive Account Manager service.
Yes, it is possible to share a link to the OneDrive for my kids to save for any future need, but 1) I don't want to share all my photos before passing away, and 2) I don't think that link will be found when needed (hopefully many years ahead)