Are We sure that the NCL/BRS-BRU routes are going back to SN metal? I have memories of previous instances of the timetables/booking engines showing SN metal doing these routes a few months before the start of the new timetable season, but closer to the time it reverted to BD 145s.
At those times people were posting here and elsewhere that SN were going back onto NCL/BRS-BRU and it proved to be misinformed. It may well be true this time, but we should bear in mind past experiences.
If the routes are going back to SN, it does raise huge questions about what they plan to do with the 7 aircraft releasrd from these routes and LHR.