Originally Posted by
manar
Having an extra gateway is also very handy if you take advantage of the right to transit the US which is a potent way to push the miles count. E.g. one can now do lhr-lax-[NA segments]-LAX-SCL-[SA segments]-EZE-ORD-PEK which if you actually want to go to China is a Good Thing (tm).
I still don't see any value added by having ORD as a gateway, in this example JFK was already available, so could go EZE-JFK-HKG-<lots of cities in china, not just PEK. I can think of a dozen other routes that AA could add which would be more useful for OWE routings. EZE was already exceptionally well served, compared to the average AA international destination.