If CASMs can be reduced to 10 cents/seat/mile through operational changes, that would put US' cost slightly under 50% more than SW's 7cents. Would you be williong to pay 50% more for a US ticket? SW's $299 maximum could become US' $449 maximum domestic fare. A $29 special from PHL to PVD could become a $44 special on US. Would you pay the fare premium to fly on US?