They really haven't done anything to improve the Y product other than to add personal IFE, which is something many legacies also have, and provide a better selection of BOB. I suspect the most lucrative customers care about one thing and one thing only in coach: personal space. There, VX is one of the worst carriers out there due to the poor design of the coach seats. That, combined with the worst frequent flyer program in the industry makes VX a very unattractive option for me, and nearly every one of my flights is full fare.