This 'dip in form' isn't hard to understand nor is it hard to solve.
First and foremost, the return of a healthy tito is a crucial part of the solution.
A plan B.
In important matches, europe, classicos, cup semis/finals extra..., perhaps a new strategy should be adopted, nothing too extreme. few ideas,
- return inesta to midfield
- so cesc, xavi, busquets shouldn't start together(in midfield) in these matches, assuming they are all fit.
- front three of messi, pedro, villa/tello/alexis - try to be more direct, without compromising too much on possession.
- commitment to 90mins of high pressing, *reason for not playing cesc,xavi,sergio together in middle.
Defensively, a solution needs to be found for the lack of pace of puyol and pique. Someone to fill the Abidal Role. For these games, one of the fullbacks has to play more conservative, sergio also has to play a more defensive role, with iniesta, xavi/cesc/thiago in the middle supporting the the front three. In these games the spain model should be looked at, a bit more conservative/balanced approach.
for the future it is clear the club has to reinforce few positions this summer.