They agreed to defer some of the issues until later versions, such as key-rotation policies, backlog of seen shared secrets, and payload formatting. The full specification of the rendezvous handshake was also deferred to a later version, as they may discover limitations or issues with the current format. For now, they decided to keep the payload sizes fixed at 20 bytes for per-hop and 1024 byte for end-to-end payload, but they acknowledged potential bandwidth overhead in high frequency settings. They also considered using a generic encoding, such as JSON or msgpack, to make the protocol flexible. Finally, they discussed the process for upgrading spec drafts, which they plan to hammer out in Milan.