While the airbus 321neo and the boeing 737-9re will add to the range,it remains to be seen if it includes flights across the pond.One point missed is that both of these variants will not have the performance of the 757 off short runways.757's are the staple at sna and other airports in the caribbean.The 757 is a rocket and today with the emphasis on fuel,I doubt any aircraft proposed will match the 757 in getting off short runways.