Logically eastern are probably the most likely to step into the NCL-CPH route, however it seems unlikely at the moment.
There is still time for new routes to be announced in time for the summer programme next year, so we shall have to wait and see. It has been so nice to see NCL's apron so full of aircraft this summer, just one complaint is that the airport need to use more than 2 buses for pax on remote stands. Pax and airlines are getting increasingly annoyed at having to wait for buses to return after one load.