Originally Posted by HongKonger

DL already has a revenue based system. You get 150% MQMs for paid F/J or YBM fares. There is also a customer value score in DL's system that takes revenue into account. Customers can't see it but it is there, and the willingness of DL agents (phone, gate, ticketing, etc) to accommodate your request/complaint/problem is to some extent dependent on that value score.