"GWY and Knock couldn't both have EDI"
Never stopped FR before, if it suits them to say they moved EDI from SNN to NOC because of costs then competing with RE is no different at NOC than SNN, both are 1 hour from GWY. RE numbers have been falling on the GWY route, I think FR can draw in the numbers if timed well, they seem to manage on BRS/EMA/LBA/LPL.
AGP/ACE look possible next year, I heard the ACE charters were all sold out early this year. It would be dangerous for NOC if FR clear all the charters out though.