All you have to do is read through the last 15 pages of this to find out how pathetic abertis is, there's been many times airlines (big names) have almost been in BFS, only for the Spanish to mess it up (local management probably can't authorise a wall to be painted without asking the Spanish).....
Maybe they are taking a more calculated approach. I would say that EZY will announce something with regard to it's NI operation very shortly. Don't forget that the airlines had alot on their plates before Christmas. BE, EI/Aer Arran, EZY, LS all should be at least interested in MAN/BHX/EMA from BFS for whatever reason.
The worst time at BFS was November 2001, MAN/EMA/BRU/NYC there were more lost (can't remember), by losing Sabena, BA, EI and most of BD's operation. However 2005 then became one of the greatest years ever. So over the next short while slowly but surely services will be added just as per 2001.