In fact, now I've read your post on the BFS thread, I see you're another one of these one airport for NI people, and that airport HAS to be BFS.
I think it is one airport for Belfast, BFS would be the sensible option from an objective point of view. I don't think that Belfast airports are worried by LDY at this stage.
Perhaps you haven't noticed pax numbers there going through the floor?
Several reasons for this eg
1. World recession - most UK airports have suffered at a similar rate to BFS.
2. Business 'low cost' carriers like WW have cut back to 1 or 2 rotations per day putting more passengers on higher frequency services at BHD.
3. FR with their low low fares at BHD having an affect.