alt Hacker NewsReputation systems have been a theoretical idea for a while, but we haven't come up with anything sybil-proof without centralized identity management. "we have a menu" sounds a lot like "we don't actually have any viable plan" in this case.
Don't get me wrong, this is awesome. I think it is built on a subtlety bad premise. I think it is time to start build organizational nomic games on this sort of contract system, literal organization governance, for systems like this to thrive.
There are tons of sybil-proof systems if you don't include signal from sources by default, but instead opt them in by hand. E.g. use a web of trust and then choose who you trust. It doesn't matter if there are trillions of accounts you don't trust, because you don't trust them.