akerosid,
I read that article with some interest. It makes clear what I suggested on here a few days ago, each of the carriers within the IAG group must pitch its business plan and compete for investment for new aircraft....
Vueling has been quite bolshy of late, especially elbowing in on easyJet, e.g. Luton and other UK routes, and Rome etc. Vueling has a great name in Catalunya, in many ways gaining the place of Spanair as a local airline in the Barcelona. So Vueling can certainly hold its own in that market, I'd expect them to stick around. In the same way that Aer Lingus is so well known in Ireland, the exercise to have the sister airlines almost segment the market will be a worthwhile experiment...