Some admins I met would like to be able to configure the inbox maintenance task to put all removed mails from the inbox into a specific folder.
For many reasons, they do not want to allow users to manually go to the All documents view, nor develop and agent, nor allow users to create rules for that purpose.
Some end users are well educated and correctly manager their inbox documents, but many others are not.
So it could be a great idea to tell adminp to put all documents from inbox into a specific folder (like the junkmail) for the inbox maintenance. Now allowing admins to define their very own folder can be a plus.
One advantage I do see in this capability is to indicate to delegates where to go to manage a small bunch of documents on a regular basis, instead of telling them to go to All documents (long to open, too much info, etc...)