Ideally, this would only be used for very isolated areas where the pigeon will fly to someone who has the fast internet connection (next hop is faster than the previous) If the whole world were required to use this and postal mail (because of some strange world ending event that destroys internet infrastructure and destroys radio signals but keeps mail working and pigeons and humans alive somehow) I imagine we could agree to a hard fork with like week long block times or something that makes the network actually work in that environment