I think the first part of the refactor task should be to find the categories.
Here are the categories i saw:
This category includes unit testing and integration testing
For talking about the other programs like the ant tasts and the repository manager
Maven extension development
For creating plugins and archetypes
This is for the project developer site with sub categories
Quality for reports like PMD, checkstyle, surefire, ...
Documentation for reports like javadoc, jxr, ...
Information for reports like mailing list, issue trasker, ...
For using maven in an ide
For deploying artifacts into repositories, application servers
For creating and attaching some associated artifacts like sources, javadoc, ...
For talking about alternative packagings like war, ear, ...
For using maven with other languages like c#, aspecjt, ...
For using maven with a continuous integration system
Then we should put guides and plugins into the categories.
Some plugins may belong into more than one category.
We also need some basic documentation for talking about
theorical concepts like packagings, repositories, ...
Then write the site...