@meowcatheorange fwiw, https://gui.fediseer.com/glossary tries to do similar to the concept you envisioned, and operates on a "Web of Trust" model.
Example using furry.engineer's listing: https://gui.fediseer.com/instances/detail/furry.engineer
It's a big list of censures (suspensions), hesitations (limits), and endorsements, and it's a good reference in case you need to check the background of a given instance before taking actions.