The Wayback Machine is great, but it's basically a hack. Archiving shouldn't depend on a single centralized entity occasionally crawling the web and saving chunks of it to its archive (but only what it finds during the crawl, and excluding content with large file sizes, such as videos).
It ought to be built into the architecture of the Web, decentralized, immediate, and (at least for small file sizes) on by default. Oh, and censorship-resistant. Even for large file sizes, I think there ought to be some very easy-to-use mechanism to donate either hard disk space or money to publicly archive content of your choice.
Those are lofty goals, of course, but the current web has is quite vulnerable to bitrot as it is, and there's no guarantee the Internet Archive will continue to operate indefinitely.
