employ high calibre management teams, who excel in operating airports for the masses, with the passenger in mind. – More than a little contrast to Luton then!
Worth remembering that there's only a certain amount you can do at Luton to enhance the passenger experience. Unlike Spain, there just isn't the space.
The previous management wouldn't have deliberately toned down the passenger experience; it certainly wouldn't be in their interest, definitely not financially to have people stuck in queues constantly.
On AENA, I'm cautious because of their links to the Spanish government. Do they have the capital to invest in the airport on top of their home market? There does seem to be a hell of a lot of wastage at some Spanish airports, even at the main entry points. And obviously their relationship with the airport's main operators is crucial, especially with the amount of competition at London's airports - again, unlike Spain. Alienate them and suffer.