@Arjan not on community gateways, but on the availability, services and support of the back-end. Also, we see that companies and cities are interested in deploying their own gateways for availability. It's good to bundle forces and deploy gateways in a more structured way for commercial, SLA protected, use. Of course this also benefits for the community coverage.
@Dagmar_forum I'm working on it right now
@jamesUS see LoRaWAN 1.0 specification. AppEUI identifies your application, AppKey is the security key of your application or device.