My personal opinion is they should do away with individual plating in J (too many meals and it gets walked down the cabin which takes time) and have everything pre plated. Gets removed from the oven and within 30sec is on your table. None of this crew waiting in line for the food to be assembled on the plate.
Sure it's 'premium' and 'looks nice' but only if the pace can be kept up which it usually can't...
Exascot, that would probably work except for the fact that most people who order meals now turn around and say they changed their mind and they want a 'normal' meal....
As for ULR A380 sectors- please ask why they put on an extra FA and CSA in First but J class is expected to do the same job with the same amount of crew even when half of the cabin operators disappear for the crew rest... madness on US sectors it doesn't stop for the entire flight...