Use case

I want to give users the option to use an external storage for documents.

Proposal

Add option to allow persistent write permission on picked directory.
See point 3: 3. Read/Write any Arbitrary File into the Shared Location under https://medium.com/@vivekvashistha/how-to-save-a-file-in-shared-storage-location-in-android-13-c1e4fdf3d2cb