[prokes]

They could make great strides with less cost by ordering the boarding order. It seems some pattern of boarding window seats first, starting from the back and moving up, would be most efficient. Of course that breaks all the rules on frequent flier statuses, overhead space and such.

Once heard an anecdote about a marching band chartering an aircraft. Flight attendants were floored at the speed everyone was settled.

[Terretta]

Most airlines do some form of this. They're up to 6 zones, outside in and back to front, not counting premiums.