Problems:

- two transcons: LAX-SJU and YVR-JFK
- does EZE-LAX exist? I can't find it
- the EZE-LAX-JFK-SYD would need to be transits at LAX & JFK and you would probably be done for 7 segments in NA not 6
- ZRH-jnb isn't yet available on OW metal so you can't book this until LX is available on OWE
- you can't do zrh-jnb-lhr-sez. That is entering Africa twice and isn't one of the allowed exceptions (ACC and NBO)

Er, well that's enough problems to start with