I would like to see the ability to change the data source URL on the item settings page added in AGO. We have many referenced feature layers that we've brought in as items in AGO. If the REST urls change on any of these services, we have to create a new item in AGO with the updated url, and we lose any settings which are associated with the layer in AGO (popups, symbology, etc.).
There does not currently appear to be a way to do this. https://community.esri.com/t5/arcgis-api-for-python-questions/update-sourceurl-for-a-feature-service/m-p/1560556#M10899
