Personally, I am not a huge fan of the NRT JL F lounge. I think it's fine, but nothing special. As for the food, it is not really to my liking, but I prefer more snack type food items than full hot meals. Honestly, I prefer the Admirals Club.
As for The Wing/Pier, maybe I'm getting jaded in my old age, or maybe I've just been through it too many times, but it doesn't excite me as much as it used to. I think it's time for CX to come up with a new lounge concept.
For my money, the QF F lounge in SYD (and I would expcet MEL, but I haven't been there yet) is the best Oneworld Lounge.