In the big games, we need to play either a double pivot, or swap one of Alves and Alba for a defensive fullback. We just HAVE to.
We have been sticking with this "lightweight midfield and both fullbacks attacking" strategy since Pep's time now, and despite counter after counter in the big games Tito, nor Tata, nor Lucho seem to see the light. Is it really that hard to see for top level coaches when the even the most average fan can pick up on this?
We can argue that they are just trying to follow Pep's model, but what has gone on for the last 3 seasons is not Pep's model. Pep had Abidal as a defensive LB, and/or Keita as a second defensive CM. He never, if ever (before his final season) went with the two attacking fullbacks and a lightweight midfield at the same time.
Even when we won the CL with Rijkaard, in the later knockout games we used to play with Edmilson and Motta as two DM's, so its not unheard of for Barca.
So basically the options are:
1) Replace Alves or Alba with one defensive fullback and keep Busquets Rakitic Iniesta in midfield. This will also allow the midfielders to play more centrally and be creative.
OR
2) Keep both Alves AND Alba as attacking fullbacks, but have Mascherano and Busquets/Rakitic as two DMs, and Iniesta as more attacking CM.
Unless one of the above is done, we won't be winning the CL anytime soon. Period.
The other thing we have to do is get Mascherano out as CB and start swapping with Busquets at DM. We are fortunate now to have 4 tall CBs in the squad, and we should make use of them.
The rest (goalkeepers, attack) will take care of itself.