Tag Inheritance from Resource Group
Be able to set tags at a resource or management group level that are inherited down to all child resources. For example, being able to set a tag for "AccountNum" or "ResponsibleParty" should be able to set at the resource group level, and then marked to apply to all child resources. It is important that any changes to the tag at the resource group level would automatically be reflected on the child resources as well.
A year after, still there is no update on this?
Tadd Axon commented
Combine this with Policy and Initiatives for a clearer path to governance