Interesting!

Check if the author is followed by me or at nth grade can be useful, but I suppose the latter is quite complex to achieve.

Other interesting infos to expose:

* A "first seen at" timestamp set using previous events;

* A "lasts replied at" to whitelist people you interacted with;

* NIP-05 domain, useful to ban bots that create multiple identities and try to validate themselves in this way;

* NIP-05 status;

If the filter acts on ranges (ex. 0.0 - 1.0) instead of precise values it is possible to compose the final score adding and subtracting the output of many conditions.