<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Commuter:
I'm sure you could get credit for K class on Asia Miles/Marco Polo. Not too many benefits in this program, however, no tier bonuses, no upgrade vouchers, nothing like that.
</font>
As I understand it AsiaMiles is only really designed as the mileage accruing part under different airlines' loyalty programmes... thus if you have an address in Asia, BA EC, Marco Polo and (I guess) AA will provide the loyalty bonus stuff above the basic miles.
Marco Polo is not bad in that respect... all the usual OneWorld benefits, plus on Cathay they will guarantee a seat in any economy subclass at 24 hours notice with a Diamond card (so you never need to pay more than the cheapest prices). No guranteed upgrades, I agree, but then upgrades on Asian arilines are worth much more than on, say, domestic US flights.