There is a small country in Africa with only two controlled airports. A friend from there is now with me and while flying with me discovered Skydemon. He owns three aircraft over there, on of them a SET. Obviously nobody from there is going to subscribe since there is no coverage and Skydemon is not going to code since there are no subscriptions from over there. What would it take to get the ball rolling?

Runway threshold coordinates: have you tried to get them from Google Earth?

State border: you can copy - paste the coordinates from enclosed kml-file.
(from http://www.diva-gis.org/gdata)
I an not sure it is up to date. And generally FIR boundaries are a little bit different due to polygon simplification.