I took another look at the program. The program does seem to be primarily aimed at International Travellers.
Clearly, Northwests existing program benefits DOMESTIC travellers. So a strategy that benefits INTERNATIONAL travellers is very complementary. I applaud NW for it.
But it still doesn't solve the problem of enabling DOMESTIC PLATS to upgrade to WBC with a reasonable program. Buying any fare upgrade certs on EBAY is still the most economical way to fly WBC.
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doglover