Just throwing it out there, but do you think Virgin could serve DXB from MAN? Could be seasonal or year round, but I think the point to point demand from the UK to the UAE has grown significantly and could be a viable service maybe thrice weekly and offering Virgin Holidays, similar to the reinstated Heathrow service.
I can see Los Angeles coming back, but can’t see any other US destinations that Virgin would be desperate to start from MAN.
PVG is an interesting one, could tie in with China Eastern in the alliance.