Mentioned above that this is similar to what UA does. For ref, here is how UA works their RPU/GPU...

http://www.united.com/web/en-US/cont...e/default.aspx

Haven't compared the two yet but just an observation... UA has been struggling in so many ways that Smisek has been pulling a lot of pages from the DL handbook to make more money. Just strange to see this is an instance where DL is taking a change from UA. Getting a feeling we will be seeing triplets in a couple years.