In a sense "Americope" is already a reality. They have already used their power to divert the Bolivian presidents plane and restrict the airspace that Snowden might have used to get out of Europe.
When these Snowden leaks first came out I was hoping that Europe would stand up to the US but the fact is that many of the Intel agencies in Europe are either in on the various programs or benefit from them via funding or some sort of data sharing.
Maybe we really could all agree on having 1 big merger.
But the idea that "Americope" would then be controlled mainly out of North America is pretty unhealthy/insane.