It is kinda nice to be copying based because it's highly reliable (against paywalls, blocking, IP bans, .onion services and other domain name thingies). It would be cool if there was some sort of reputation system. Obviously on top of the promise above.
Archive.today is great, except for the Google captcha. It's no small feat to run an archiving service especially against copyright law–the archive.today guy seems a bit crazy–I still have mad respect for him.
Something that the people who keep submitting these links get wrong, is on Hacker News you're supposed to submit the original link and then the archive / bypass in the comments. Hacker News is not against against Nongraph or something, most archive.today mirrors are also banned for post submissions.