I am creating a website for a law journal. They want people to be able to comments on articles. I figured WordPress would be a good solution, each article could be posted as a blog entry. But I need to be able to group articles by the edition of the print journal they appear in. A "Current Articles" navigation tab will take people to a list of articles from the most recent edition. A "Back Issues" tab takes people to a list, by edition number, of past articles.
If anyone can give me a sense of how much customization would be involved with WordPress it would be much appreciated. Perhaps something like Mambo is a better solution.