Comment by jewel

This sounds great. One idea I had to stop abuse was to force traffic from a phone to route out to the public Internet through its own base station.

That would require a lot of hops, in some cases, but the traffic could short circuit through others' base stations back to their own through the Internet, without originating the traffic from the intermediaries. I wrote up more about this here:

https://stevenjewel.com/2014/01/android-mesh/

In this particular case they could originate the traffic from Volk servers instead.

Also, people here may be interested in GoTenna, a portable mesh network hotspot that has been out for a few years, at roughly $75 each.