Well, I personally don't believe it will do us much good at all. Our problem isn't the formation, it's our manager. What good is a 4-2-3-1 if our two DMs are Gomes and Busquets/Mascherano with Iniesta playing behind Suarez while Messi and Neymar are still out wide? There's no doubt in my mind that that would be our starting lineup, and it doesn't seem any better than what we currently have going. We'll still have a huge gap in midfield, Iniesta will most likely remain lost, Gomes will always be slow and incompetent, and Busquets will find himself stranded more often than not, which will leave MSN trying to win all the games on their own and failing and then we're right back at square one. And this is assuming Lucho's idea of midfielders working as second/third wingers actually stops being a thing which, let's be honest, doesn't seem all too likely as he's always been a fan of that tactic even despite the glaring weaknesses that are frequently exploited.
If you ask me this is too little, too late. We don't need a new system, we need a new manager. I've already given up on success for this season, I'd rather we sack Lucho (Or see him resign), bring in our next man who can start forming the team to his vision, and try to come back in full swing come August.