I was thinking (first problem) to use the "view in browser" url to build a link page for viewing past newsletters. If a user clicks on the unsubscribe link, the url "mysite.com/civicrm/mailing/unsubscribe?reset=1&jid=&qid=&h=fakehash" creates an error page:
Sorry, due to an error, we are unable to fulfill your request at the moment. You may want to contact your administrator or service provider with more details about what action you were performing when this occurred. Missing Parameters
Looking for a cleaner redirect...