The blacklist of things
Too many ISPs and networks can't be bothered to handle abuse complaints, especially if they think they're too important to suffer any consequences. If we're going to put billions of Idiot of Things into the IPv6 address space soon, this all needs to be automated. That means a standardized and automated means of reporting problems, automated means for an ISP to detect that the problem is happening, and the ability to automatically block customers until the problem is resolved. Networks who can't be bothered to participate or who create false-positives should be entered into public voluntary routing blacklists, much like those used to track spam-friendly ISPs. It's the only way to handle tens of millions of attacks quickly. (Google may go offline for a week when this is implemented, but I'm sure they'll get around to joining the party.)