So I phoned QF to check on availability PER-KUL. It was only available in J on the day I wanted and the points cost was 53k instead of 50k. It seems MH redemptions may have a similar policy to CX where you have to pay a premium.
Which is the standard cost for Partner Classic Awards - the only
oneworld airlines which fall under the Qantas Classic Award cost table are AA and BA (and the latter only on flights between SYD/BKK, SYD/SIN, SYD/LHR, BKK/LHR, NRT/LHR, SIN/LHR and HKG/LHR).
Its looking like its a big no, MH have updated their site to say now their elite and F class passengers can access the Platinum Suite, indicating they wish to keep the normal F lounge for OW, bit like their Plats can access Lobster on book the cook, others cannot.
I can't find this on their website. I can find info saying that MH Plat and MH F can access the Platinum Suite, but not specifically saying that other
oneworld Emeralds cannot.
The new benefit for Emeralds of being entitled to priority security at selected airports.... it's not many of them!
AMM, BOS, TXL, BNE, ORD, DFW, HEL, LAX, MAD, MEL, MIA, DME, JFK, LGA, SFO, ARN, SYD, NRT
...and the three (only three?) Australian airports that offer the "benefit" only apply to selected carriers. For example, ex-BNE, only elites who check-in for QF flights will be eligible for the benefit, even though CX operates from BNE. In SYD, it's only QF and LA. I'm sure each of those "left out" airlines have access to Express Path, at least for their premium class pax, so they may offer it anyway to
oneworld elites (even though it's not gazetted).
Noticeably missing from the list (and that do have a "Fast Track" service, except perhaps one of them) are LHR, KUL and HKG. Gee.....