Maybe the Wing lounge (J section) can add a Pre-Flight Dining area, like the one in BA Terraces Lounge @ JFK, for J pax, as well as MPC members at the Wing Lounge's renovation.
this means that the original food/drink bar is retained in J lounge and a new dining room with a Full Buffet is set in the J lounge for J pax and Members of MPC to get more sleep in the long-haul flights like:
Dinner Buffet for: CX251,CX888,CX255,CX271,CX293,CX233,CX206.
Breakfast Buffet for: CX548,CX139,CX163,CX520,CX506.
In addition, The Wing's F section's dining room can be converted to an a-la-carte dining style, serving the same purpose as above.
Then, when these passengers are on flight, the 1st meal is distributed On request.