Access denied for older MIH link
Access denied for previous MIH link e.g. https://civicrm.org/make-it-happen/export-interface-overhaul (link found in https://civicrm.org/blog/josh/improvements-to-the-export-interface-are-in-the-works)
It could be an opportunity to give the status/result of the MIH and/or redirect to a page that list the more recent / related MIH.