An error occurred while saving the commentPierre-Olivier commented
Today sharepoint does not allow the content type "document set" inside a document set. This prevent to build a tree structure of document sets like we would do with folders. The advantage would be two folds:
1. The file within a document set would inherit from all metadata of the document set of upper levels.
2. When synchronizing sharepoint with Onedrive, it would be possible to manage its files like in a "good old" folder structure.
Doing so, we would benefit from the best of the two worlds, i.e. folders and sharepoint views.
I am not sure whether it would be possible or necessary that a document set B ineherits A, but for sure the files in any of the document sets should inherits from the metadata of the document sets of upper levels.