To hijack the thread a bit, is there a way to estimate MPM?
HKG-ADD-LHR on ET, LHR-ADD-HKG return on ET (not the one stop thru BKK) is not bookable on the ANA search engine, but HKG-ADD-LHR on ET, VIE-TPE-HKG on EVA is. Other star alliance sites show availability is present.