Next time I'm down there I'll certainly ring their longfast some more, seems like at least one of the nodes I picked up on was a solar powered RAK, and was picking them up from an unideal spot from over a mile away. I'd certainly imagine they'd want to expand.
I'm a little apprehensive of being on a map, I know that there's programed deviation and you can opt out. I am looking to join a local metropolitan area group.. but they only cover up til a few towns away (at least with position disclosed nodes)