Hi Rosie,
I expect a repository to allow an admin to track assets/content that is not public. By that I mean, we have some content that we cannot make public (copyright/sensitive/etc.), but I want my repository to be able to tell me where that content is, etc. (in other words, to be included in the reports you mention), and I want it to have all the preservation processes applied to it that are being applied to public content in my repository.
I see this as a simple access control issue.
Mark