Airbridges are used in BCN, MAD, TFS, ACE, LPA, AGP and now ALC. This makes the 35 minute turnaround nearly impossible. Delays become frequent as slots are missed and the operation just isn't as efficient.
I am surprised AENA dont give airlines an option if they have the ability to use either or.
I would think the new airport near Murcia will become a base, and take a lot of traffic from ALC, maybe in the summer see a split of 5 A/C at each base. This is purely speculation however.