Seems like  nostr:npub1u5njm6g5h5cpw4wy8xugu62e5s7f6fnysv0sj0z3a8rengt2zqhsxrldq3 is working on something very similar, did you guys sync up?

I recently shifted my thinking around these complex kind of attestations, it's going to be hard to: (1) implement with good UX to actually make it work, (2) too many different opinions on how to go about it

As an example, bitcoinmints.com is already working today with kind 38000 which is definitely an expression of trust. The WoT implementation you suggest will not take into account these events? Another, if a very trusted friend (because met IRL) heavily zaps someone you don't know, isn't that a form of trust? Third, if someone is listed as "good guest" in kind 827919 for a couchsurfing-type app, isn't that a massive vouch even without signing a NIP-77 event?

Seems to me expressions of trust take very different forms, will be  application-specific and therefore we should accept them as such. I'm tending to think that "writes" should be as easy, heterogenous and scattered as possible and the heavy work should be done on "reads", probably via sophisticated algos/DVMs which: (1) return a viable set of evidence to be verified client side, (2) themselves have a reputation