1. The late fee for booking an award that AA and CO charge. Why do some airlines charge it ad others don't. You have already paid enough when you earned the miles and usually there's no need for a paper ticket because you're booking a few days before the trip and you have an e-ticket. Charge for the late booking of paper ticket awards. E-tickets do not cost anything extra since the customer prints them.

2. Devaluation of miles or points without informing the customer in advance or with enough time (Radisson Gold Points and Hilton Hhonors). Changes should be made for the following year and not for the current one. Give a reasonable time (Maybe a year) to use the miles / points at the same face value in which you earned them. Keep the old program for those miles/ points while the new program is in place for a certain time.