Steve, you can get the same benefit (organization around manager for approvals, etc.) by adding a field for department to the use case. You can then order the use cases by this new field in your output. You can even prompt for the department if you want separate documents per department. In this way, the package organization can be order management, but you can still produce output for each department to review and test their areas of interest. That's one possibility. You could then use your normal document output to show people the "Big Picture".
Hope this helps.