JAL F is indeed very nice, at least on the 777-300. KUL-NRT does not have F and both MH and JL use old planes on this route. If you can get to CGK, JL has the 777 to NRT at least on some days. However, this route seems subject to equipment changes so a bit risky.

If you don't mind adding segments, the other idea is to fly DPS-KUL-BKK-DOH-CDG. QR has the new A380 with a very nice F product on BKK-DOH-CDG. Award availability in F may be an issue I have read.