I think the new 787/350 would be the ideal aircraft for airlines planning new long haul flights from NCL and both aircraft should be able to operate without the need for a longer runway. we know the 787 can and does. (the type exception would be the ubiquitous 757 from American operators)
Awaiting a decision about cruise ships entry and berthing in Venice may well have caused Jet 2 to hold off any announcement on the route for 2015.
The issue has been resolved now and ships will continue to operate out of the City so maybe we will hear something soon.