Just put less fuel in the bird and ban German passengers or obese passengers and give discounts to anorexic passengers. If you multiply 550 x 150, they are most of the way there. Make those statutory passengers go on a diet. Don't serve soda or junk food either and only give high protein meals to those few passengers who are actually paying a high enough premium to get fed and I think you have a solution.
Howard Hughes' big plane was known as the Spruce Goose. Looks like the A-380 will be known as the Aluminum Albatross.