We find it helpful not to clean any orphaned users entirely so we keep the "created by" and "modified by" data for these users, but we would like to automatically remove their permissions (direct permissions as well as memberships from SharePoint groups) so that our site owners don't need to manually clean up their permissions to keep a good overview. Therefore I suggest to add the possibility to "Clean orphaned user permissions only" next to the "clean orphaned users" in SharePoint desktop.