I think we should get double miles for flying IB in the rear cabin, particularly trans-Atlantic, the ptich is so tight and the service almost non-existent! But seriously, this is an alliance of airline, not a merger. Each carrier should maintain its independence and set its own mileage rules consistent with what it provides for its own domestic members. Why should an AAdvantage member get 100% mileage credit for a discounted fare, when a resident of Spain or Canada only gets a fraction of that as a member of IB's or CP's program? Competition doesn't exist to the same degree outside the United States as inside, so mileage is going to be less on non-U.S. carriers even if they are part of an allaince like oneworld or Star.