While I don't mind the premium multiplier for flying first class with AA's Exec. Plat., I do disagree with the 0.50 multiplier for discounted fares.
I do fly Y once in a while, but I never will fly paid first class as my company will not pay for it (except for international flights which for me are far and few between).
So I guess the argument is for me...why should I get less miles for planning ahead of time to purchase my ticket? Maybe AA thinks I am less valuable of a customer, but I guess that's why I've switched to CO as my airline of choice. After I've reached Platinum status, it's too difficult for me to reach Plat. Exec. when I have to earn double the miles to reach the same plateau as someone who pays Y fare all the time.
If the idea of an FF program is to promote loyalty to an airline, then I don't think this 0.50 multiplier is the way to do it.
--Ryan