Please elaborate.
Pogba is a traditional box-to-box mid like Rakitic, and Gundogan is a bit like Xavi.
How does that make it a double pivot?
I share the same feeling.
Rijkaard's 433 was almost the same as Lucho's.
With similar positions and with a more direct style of play than Pep's 433.
Anyway, during Rijkaard, our main midfield trio was a pure defensive midfielder (Edmilson, Motta, Marquez) and then 2 Cms, usually Xavi and Deco.
When Xavi and Deco played, Xavi was Xavi (as always), a pure Cm, while Deco was like Iniesta today, some kind of a Cm-Amc.
Also, when we bought Deco, Rijkaard said that our team suffered when we had only one playmaker (Ronaldinho), and that when our opponents double mark Ronaldinho, we get into creative problems.
So, the coaching team decided to buy another playmaker, who will do the hard work when Ronnie is heavily marked.
That was Deco.
So, even before Deco, we had Xavi and other midfielders, but coaches didn't consider them as "playmakers" but only as "regular midfielders".
Today, imo, Iniesta is also a playmaker, while Raki is "just" a midfielder.
In that sense, I wouldn't want to see a midfield duo Pogba-Rakitic.
Who is playmaker here (in Barca's style of a playmaker)? No one.
They are more or less the same type of a hard working midfielders who run a lot, but who are not exactly something like 10's, like Deco or even Iniesta.
Gundogan, the same story. He is Xavi, and not Iniesta.
If we already have one Xavi (aka Rakitic today), what we will do with another one?
There is a reason why Lucho NEVER played Rakitic-Xavi midfield in important matches=because we lack a true creator, a true AMC in that combination.
Iniesta and Rafinha are both Cm-Amc's and they were usually paired with Rakitic, who is a classic CM in our formation.
Anyway, my post is not about Coutinho. I have no idea yet what to think about him.
If we want Pogba, then Rakitic needs to be sold or benched.
Pogba-Rakitic, and even Rakitic-Gundogan doesn't make sense (imo).
Those combinations are waaaaaaaaaaaay too defensive for our style.
We would surely get more possession and control, but we would lose some lethalness infront of goal (and an extra man always lurking around the box, but also thus making more space for MSN trio and leaving less available defenders to mark Messi, Ney and Suarez.)