4: building a physical mesh network to link nearby computers together over fast links (BATMAN for no se vende mesh here in LA)

5: developing a mobile adhoc mesh routing protocol that can setup a usable internet using only smartphones that interoperates with the fixed mesh noted in 4 (this will likely replace BATMAN, but is also a research problem and would represent a novel capability)

I think there is a strong tendency to put the cart before the horse when it comes to mesh networking. People imagine how cool it would be to have widespread mesh networks, but setting up a digital radio doohickey accomplishes nothing if there is nobody listening on the other end. We need social organizations first. Then, communications technology can be built to serve the needs of these organizations. It is very much a local organizing problem. The tech does not circumvent this.