thoughts are good but spreading that out over all aff’s would not be as lucrative I think for having a week at promoting anything you want right. In your week it could be a white label!
Also I would go for keeping all older pages as the content value would be huge if its new content each week, then we keep the old as well as everyones offers from the past!
the more I think about this the better.
Everone can update the title / keywords and description each week as well, and that will stay with your page even when it is no longer the index.