I Guess I asked for that, didn't I RS!
I'll need a little while to read it through properly and try and understand !
RS,
So the idea is to create a peer to peer local network. Will the system you are considering pass messages on from one network user to another, until it reaches its correct destination? Kind of e-mail without internet???
Extending range of networks to inter-connect between villages: What about using signal boosters and highly directional Yagi antennas between hubs at either end? See below. This sort of arrangement would give line of sight links.
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2W 802.11b/g Long Range Wireless Router Signal Booster WiFi Broadband Amplifier
http://www.ebay.co.uk/itm/2W-802-11b-g-L...4175bfe873
2.4GHz 25dbi Yagi WLAN WiFi Wireless RPSMA Antenna:
http://www.ebay.co.uk/itm/2-4GHz-25dbi-Y...5d3884cae3