Vantaggi
Qantas has an outwardly progressive stance about lots of things. Many of their corporate policies are really generous and well received by the staff, and they are forward thinking in many ways. Their focus on customer service and satisfaction is solid, and people like to create impeccable experiences. When I was leaving there was a strong sense of change in the air, which was starting to ruffle the right feathers.
Svantaggi
There is some serious bureaucracy which is difficult to overcome because of it's age, and the average tenure of employees (something like 15+ years). There are some really challenging people problems they face from a cultural perspective, as many employees are still there from when the airline was a government entity, and can have low motivation / drive for success. There are some entrenched middle-managers who are fearful of change, which affects many decisions.