In general, I would start with addressing things they are allowed to get away with in terms of (re)scheduling flights, not updating passengers with relevant inf

In general, I would start with addressing things they are allowed to get away with in terms of (re)scheduling flights, not updating passengers with relevant info in a timely manner, holding flights/passengers, and refunds/cancellations. The in-flight ads are mostly avoidable if I put on headphones and/or just close my eyes and take a nap. As long as the plane is in the air, on schedule, and moving in the right direction, I am getting the core product I paid for.