Thanks for sharing your thoughts!
In the first version of the site, the initiator defines the core team. In a later version, I want to create some basic positions at the 'core team' where people can subscribe to. By subscribing to a position, you agree to the responsibilities that belong to that kind of position. In case people don't take up the responsibilities, it will be able to remove a person from the core team list.
We have a new developer at The Things Network, started yesterday called Dorian. I'll discuss with him the possibilities of implementing the different platforms for the activity feed.
At this point, the communities are bound to a location, though it is possible to be part of multiple communities.
Indeed, we need to provide more information about the gateways and I agree, we need to update the Amsterdam community page. Will do that soon!