I would honestly like to know what does a "poor fit" even mean? Someone can be a poor fit if you have an excellent squad and you need a no.9 but instead you go out and buy a winger in order to play him as a striker. That's a definition of a poor fit. However, claiming that a good player is a poor fit for Barca right now is laughable. I can understand that Griezmann was a poor fit while Messi was still here or that Coutinho was a poor fit for Neymar's position but how ca FDJ be a poor fit while you have a grandpa playing as a DM and two kids aged 17 an 19 as other two midfielders. Maybe they are a poor fit for him and not FDJ for them?!
In addition, he is a poor fit for what exactly? Do we have a strong squad that suits 4-3-3 formation??? Hell NO! Do we have a world class midfielders so FDJ is a poor fit with the rest of them?!?!? Hell NO! So where the fuck is the problem? Our manager should find him a position in the squad and stop forcing him to play as a CM/AM player close to the line. Furthermore, someone could have said back in 2007 that Messi was a poor fit for 4-3-3 system since he wasn't a true winger or true no.9. However, Pep was smart and he learned how to utilize the best player ever. IMHO, this is one of the reasons he became the GOAT.
The way I see things, sticking to the classical 4-3-3 with the full backs and wingers we currently have is dumb as it gets. We should change the system to accommodate the best players we have and not vice versa. I don't care if we go out and play 3-5-2 or 4-4-2 or 4-2-3-1 or 4-3-3 or even 4-5-1. I couldn't care less about the formation as long as we finally find the best positions for all our players and start winning. There is no such thing as preferred formation only formation that actually suits your current squad! Unfortunately, the way I see things is that Xavi will rather play Gavi or Nico as wingers than actually change the formation on the field or try something different. IMHO that stubbornness in trying to replicate Pep's Barca brought us here together with our bad transfer policy.
Times have changed and people within the club and our fans should move on. We should accept the fact that we need to change and that formation isn't something written in the stone. If we don't accept that we'll continue to suffer for years o come.