Well, what would happen if every single one of you would cancel your preferred ports, all on the same day so it kicks in at the same time in the next quarter or whatever the rule is. You're giving them the option of 2 ports when it's convenient to them, and quadrupling the chances of roster disruptions (each port can change before and during a pattern) but you're not really getting any good will back, so why help them out and set yourselves up for more disruption?
Nobody on a PP means a lot more PX/PT and a lot more hotels and allowances. That should get some attention, don't you think?