Don't forget that major carrier and beloved partner Alaska Airlines' lowest tier elites also get two free bags on their metal (obviously not much the case for DL anymore)
http://www.alaskaair.com/content/mil...-benefits.aspx
on the flipside, the value of a plat amex will be offset after 6 flights with an extra bag. And you'd get a free companion ticket in Y to boot.
by no means a positive change, but there is a silver lining, i guess