Stop serving food/snacks/drinks on the shortest flights and instead implement grab and go lounges. Saves weight and can give customers greater choice.

Let people on the plane as they are seated, start with A and F, then B and E, and then C and D at last.

a better airline trolley for sorting garbage. Maybe with possibility for travellers to put in from the sides.

Enable paid upgrades to Bio tickets online after agency/company booking is made, so employees can override restrictive company policies and gain more level points

Use larger packages for the most consumed drinks, instead of handing out endless amounts of cans (less garbage, less weight on board) .

Fill up empty seats by selling affordable return trips to unknown/secret destinations. Pick the destinations among those that have low occupancy close to departure time.