Yuki Kishimoto on Nostr: As per NIP-59, the rumor should use the current timestamp, while the other timestamps ...

As per NIP-59, the rumor should use the current timestamp, while the other timestamps should be tweaked: https://github.com/nostr-protocol/nips/blob/2ab507db107d0af2aa9a61327151799a1ad2d491/59.md#other-considerations

But yeah, I can add that option.