When United operated the EWR is was cheap enough. Usually on a par with Dub prices. The Biz class was regularly busy although hard to know if they were upgrades or not. The dearest I paid was £750 to LAS over a school holiday. I regularly got Florida connections and other similar length trips between £4-500.
Virgin are pricing themselves out of the game. You can fly from DUB to MCO in American’s Premium cabin for about 3/4 of what VS charge in economy. Virgin’s forward bookings in the shoulder months are grim with virtually no interest in the J cabin and little more in Premium. They’ve just dumbed down their economy product again but kept the prices up. If anything they’ll be scaling back next year, not expanding further. The 747’s retire within 4 years. If they’re still around BFS they’re more likely to be using the 330 than the 350. I’m surprised they didn’t use it in the first place. The 330 makes a lot more sense than a 468 seat Jumbo.