Frequency needs to be built up on the New York route, rather than just up gauging the aircraft
MAN-NYC is now back up to 4 times a day on some days, which is as good as it has been for years.
MAN now has
1 B757 per day to JFK
1 B767 per day to JFK
1 B757 per day to Newark
1 A330 3 times per week to JFK.
There is also a 3 weekly 1 way B777 per week with PIA too if it takes your fancy?
Its also been a while since we had scheduled widebodies to JFK, and now there are 2 different flights to choose from on there.
Aside from an upgrade from United, I suspect this is as good as it gets for the foreseeable.