Allow free rebooking on the day of departure to a shorter route or a route with less stops when available, even in low booking classes and without status.

In order to maximum cabin factor, offer Eurobonus tickets on all flights

Bio fuel / green fuel as default, and having to pay more as a passenger if you want to fly on fossil based airplane fuel.

Dynamic seating - people with checked in baggage should be placed towards the rear of the plane as they are more likely to have to wait anyway on arrival at destination.

Instead of serving main meals on the flight briefly after takeoff, service the meal in the boarding area. Save load, effort and waste.

In small airports, like Vigra, where there only 1 or 2 airplanes stand, have roofs like carports to prevent snow on plane. This will reduce amount of deicing fluid needed.