Remove the Name: header for the Generic Collection and replace it with Title:.
This reuses previously defined, though arguably not widely implemented, headers.
Replace Section 5.2.6 with:
5.2.6 Title: Header The POST to a Collection Resource MAY contain a Title: header that indicates the clients suggested name for the resource. The server MAY ignore the Title: header or modify the requested name to suit local conventions. Name = "Name" ":" relative-part The relative-part production is defined in [RFC3986].