To me it looks like Fedora's policy makes sense: In cases where the licensing is unclear.... So if the license is clear, there should be no need to care about the copyright. The author field should be enough.
That said, if this helps the Debian packagers, then why not.
Is there somewhere a list of best practices for modules that would help reduce the packagers work load? Something like the list in your post, but maybe better formalized, ideally as a single test file, to be included, as t/debian.t for example, in distributions?