Being able to identify certain files within a project as being a high translation priority would be useful. In my case, I have two books that are built from the same set of files to reduce translation labour. But translators will have no way to know which files must be translated to complete the smaller book first. If these files were identified as such, once they are translated the smaller book could be published and the translator could then continue with the remaining files. This may be best suited to the website UI or the Zanata client, I'm not sure.
Priority is something we could be giving to documents and projects. This is a small part of a larger group of project management features.
Reassigned to PM
Migrated; check JIRA for bug status: http://zanata.atlassian.net/browse/ZNTA-253