... to give him your feedback on what the airline should do, or do more of, to "delight" you and increase your loyalty as a premium customer, and stop doing to retain you as a loyal customer, what would you say to him?

Practical tips please, not "put showers in the aircraft" and "have on-board bikini-modelling" type of stuff...! (The latter was actually featured on one of the Latin American airlines a couple of years ago!)

(redacted admitted tos violation).

Cheers,
Sankaps.