For mismanaged sites where the site owner changed URLs and could have added proper redirects but instead chose to just show 404s for all of them (article mentio

For mismanaged sites where the site owner changed URLs and could have added proper redirects but instead chose to just show 404s for all of them (article mentions the examples of github and java, but there are countless more), there should be a wikipedia-style community-driven reference project with better redirects. Is anybody working in this direction?