Use powder soap instead of liquid soap in all lavatories, powder soap is much lighter thus reducing wieght.

Develop solar-powered aircraft with energy storage systems to enable fully renewable, zero-emission long-haul flights within the next decade.

In M class on Intercontinental flights reduce the usage of plastics, ask the passenger to keep their glass for the entire flight before collecting it for recycling.

I would use my skills in optimization and deep learning to learn what frequenzies and time schedules that maximizes the load factor of each aircraft in the fleet.

Same amount of points earned from origin to destination regardless of amount of flights.

Re-install the Gate Lounges where we can have coffee/snacks pre-flight