Is there a way to restrict creation of articles so that users belonging to a specific team are only allowed to create articles that have a specific subject.
Example: Users belonging to team Benefits can only create articles with the subject Benefits.
Secondly, is it possible to force articles to "expire" after a set period of time?
I think, to achive this, you have to develop a plugin checking if user can create an article. (you can also make a configuration team-article subject).
For the second requirement: maybe a workflow to search old articles and unpublish them.
If you need any details, let me know.