>Regarding mesh networking, you don't have to have encryption to do that. It could still be very interesting, you just have to know that people can inspect your transmissions. If they didn't allow this restriction, I imagine the system would just be overrun.

You can't have traffic that is ssl, ssh, or any other encrypted protocol. Stop and think how useful a network you can have without that, no emails, no websites, no authenticated connections between computers.

The only things we have left are http, telnet and anonymous ftp.

Welcome to the 80s Arpanet, but anyone can modify your packets undetectably.