tbh it would be really cool if there was some globally distributed & decentralized dead man's switch, which allows you to have pre-determined messages published after you're incapacitated
smth like that would not only be useful for like normal people, but also people in dangerous situations like activists, journalists, etc.
here's like a rough idea I have in my head:
in order to create a dead man's switch, you would generate two private keys.
the first private key is used to encrypt a message, and then you use the second private key to sign everything to prove it's you.
you can then distribute the encrypted message.
then, you take the encrypted first key & split it up using something like [shamir's secret sharing scheme](
Shamir's secret sharing - Wikipedia
)
you can then distribute this split key to a diverse set of members of the network.
should a node go down, there is redundancy in the network as it only requires some percent of the shared secrets (e.g. 70%) to be decrypted.