If this is the case I can see EZY expanding/opening a crew base up at DSA. The amount of passengers from the North East, Newcastle / Sunderland / Durham areas etc that travel on EZY (plus numerous others) flights from DSA could perhaps sway them in this direction to perhaps expand on the base.
Could there be an outside chance that they may wind down their NCL base and run an operation from MME similar to DSA? I cannot see at the moment that DSA would become a crew base, but i can see more NCL aircraft (if they do leave) going to either MAN or onto the continent.
Unfotunately it seems, as has been alluded to in a post a few back, that they have failed to get into the major leisure routes and Jet2 have taken advantage of that already.