Indeed. With thé right transfers this is a interesting formation.
Yea a pity the board will most likely make the wrong decisions as it relates to the coach and players this off season.
But If it were me, this is what I would do.
The team needs 3 players, a RB,MD and WF, we can't get all in one window, so this is how I would go about it.
Option 1.
Keep Vidal for one more season, he as been showing promise before his injury.
Invest in heavily in a Class midfielder & RF
Or option 2
Rotate the 2nd person in the double pivot, between Roberto, iniesta and rarely masch/samper if we returns.
A busquets-iniesta pivot can do in 90% of the games we play.
Buy a top MD & RF.
Which ever option you pick, a RF is a most, then it's a matter of prioritizing the RB or CM for this off season.
But this board being dumb as shit will try to sign a RB & MD.