The main thing with this list from the masterplan, IMO, is where the consistency in demand would come from. Very little business travel in either direction other than hubs, very little inward tourism too. Generally just taking a plane load of Geordies on their holidays, then bringing them all back again. Once everyone from within the catchment area who wants to go has been, that's it, the route gets pulled.
BER was served by EZY back in the 7 based A/C days and got pulled, then they tried again a couple of years back, 2-3 a week, but pulled it once again. Big routes like MAD get pulled too after a season or two.
If anything on the list does come to fruition I'd expect short term, low frequency, as has already been mentioned earlier.
Any airport who can achieve 9-10m pax per year ought to be able to sustain direct flights to NYC. As NCL can't, I'd not hold much hope for ATL. AA tried JFK but pulled it before it even started, then UA failed also. Nobody has an a/c small enough to accommodate the 90ish pax per flight demand and still turn a profit.
EZY aren't interested, FR are reducing their presence more and more, LS are going big at STN and BHX so dont seem to be very cuty break oriented out of NCL other than the ad hoc offerings and PRG. Wizz wouldn't be a bad call as it's hard to see where any new additions would come from.