Let me do my job as mouth piece. With 9 games to go and an 11 point lead (minimum), if Pep has ideas in his head that needs testing... When would you suggest is a better time to test those theories in a live match?
A cup final? The Champions League? Against Everton in the QF? Or against a positive football team in the league in a game he could risk dropping points if things doesn't go well?
Think it through. And you have your answer. This is a Chess move for the Champions League later stage. Some can't see it coz they are playing Checkers.
Your move! :)