Would it make remailers more reliable to use a netescrow system, so that if a remailer goes offline, the others can request its keys, and continue moving its messages?

Do you operate a malicious remailer? Have you just recieved a message from a person, encrypted for another remailer? Want to know who this person is communicating with? Bomb the next remailer in the chain or do whatever else to force it to reveal it's keys. Once that's done, you can peel away that layer of encryption and then go to work on bombing the next remailer in the chain to obtain it's keys. Repeat until you've peeled off all the layers of remailer encryption and can see the final destination address. Tell us, what have you done with the _real_ Adam Shostack? ;P