yep seems like a dangerous formation against a team with fast wingers and smart fullbacks. especially since our midfield doesn't run much.
Yeah, don't see this formation working against better teams either but still think we'd have better chances than sticking with Griez and Messi as "wingers" in 4-3-3.
I think when Frenkie is back something like this could work. Some strange 3-1-3-1-2 like formation.
---------MATS--------
Semedo-Pique-Lenglet
--------------Busi----
Roberto---FDJ-----Alba
--------Messi----------
---Suarez--Griezmann---
Alba is better offensively (well, at least he has a better understanding with Messi) and worse defensively than Semedo so I'd give Semedo a more defensive role to compensate for a lack of defending from Messi (who would still have a chance to move to the right and play there with SR). Griezmann could interchange his role with Messi during the game and drop deeper so Messi would be closer to the goal where he's more dangerous. And he should obviously help out Alba defensively when we could turn into a 4-4-2.
MATS
Semedo-Pique-Lenglet-Alba
Roberto-FDJ-Busi-Griezmann
Suarez-Messi
Alternatively we could also play Puig-FDJ-Roberto in midfield but it does look a bit "too soft" IMO. And I'd like to give them a few easier games in La Liga to see how the'y do together before sending them out in the CL and since FDJ probably won't be back before the end of the league we won't have a chance to do that. And well, Busi is basically unbenchable at this point anyway so we have to find two midfielders to pair with him. And if all available I think this would be FDJ and Roberto. Puig and Vidal can be impact subs from the bench alongside Fati.