Nice move in terms of derisking the european operation reliance on Aer Lingus.
At CWL Vueling stepped into the breach when bmibaby packed up. Equally, BHD has a second airline who will have some experience in the market and should EI ever bow out, the city airport have a second airline within reach. And with multiple bases including Paris, Malaga, Toulouse etc. perhaps we could see more should BCN deliver.
VY have good experience competing with easyJet and seem comfortable with same. I think they will get a nice slice of the market, though the challenge will be marketing a brand on this side of route that most will not have heard of to date.