Something that would be nice to have:
The ability to embed a link to the project's source repository so that search.cpan.org could display it.
You can do this by sticking something in the POD, but having it in a standard place (like Links:) would be much, much better:
* You could find the project's repository without hunting through the POD
* You could tell, at a glance, if a project has a repository that the author would like to share
* It would encourage users to contribute documentation and bug fixes