I will try to explain what my Customer wishes for the coming view for Items and BOM.
As the view is now, it is not possible to view data from related Workspaces.
My customer wishes to change this and would like to suggest that it will be possible to display data in columns created in a related Workspace.
The reason for this wish is that they will thus be able to see a view of their entire Items and BOM on the master product and that will avoid some clicks with the mouse.
I have talked to the customer and told that the way we can do it now is by using the Descriptor.

The view as it is now.

View as wished.