That formation is not going to hold vs strong attacking teams like Bayern, Madrid etc etc. Gonna get ripped apart without marking through the middle.
That's good for when you're down and you need to score and just throw caution to the wind in order to overwhelm a team who is sitting back.
IMO best formation for strong offensive teams is to play 4-5-1 with wingers and laterals sacrificing their physique in order to defend and press with conviction and aggressiveness, but still bomb forward suddenly to cause havoc.
IMO
RB-CB-CB-LB
--Cesc-Busi--
Alexis-Inista-Ney
----Messi----
messi doesn't play classic 9, he plays false 9 = midfield. As he drops back, So he already scored 60 odd goals every season, in last three season playing freely, dropping down to mid to linkup with midfield and become a bridge in attack and mid.
Now consider the situation if messi dropps back very often, who is up front ? With villa gone ? = neymar. why ? just to make sure Cd doesn't follows messi or if he does some one is exploiting a space. So if neymar moved to center 9 postion, who's at left wing ? if thats empty the opposition right back will be an extra defender to track neymar (who will be marked by 2 cds and a right back) why do you do put a left winger.? Espescially someone like tello. He will surely put the right-back back in place. Advantages ?
1. Neymars gets a man less
2. Messi get full freedom, he sees more ball, he can dribble, shoot, pass. a classical 10.
3. Now with bigger teams, we saw the bigger problem was no one was actually threatenining the opposition's penalty area as messi fell back. Exactly in contrary to what you suggested.
4. Now with three upfront primary problem isn't to handle messi as there are three forwards attacking the goal. So their focus will be those three, neymar,alexis and tello/pedro. So what ? messi in a surprise element !!!. Everywhere on the pitch,and he surely will be unmarkable.
Now what if they focus on messi in this case ? = messi will set free the trio free again and again all over the season with those killer ground, areal, long, short smart and penetrating passes which he is fully capable of more than thiago will ever be.
Thiago was perhaps right to leave, or might cesc aswell.