Reports:

• All the copyrights for Package A
• All the files in package A that have copyrights for Mary Doe
• With a historical repository, Find all the files that have had their copyrights changed
• All files with no copyrights
• All email addresses
• All url's

Issues:

• LICENSE and NOTICE files list multiple licenses and copyrights for different parts of a package. This isn't necessarily a problem, but it means that it would be difficult to programmatically extract what copyrights go with which part of the package. So granularity below the package level will be difficult.