Here's my idea:
The comments there basically mean Suarez has to lose weight, Riqui Puig has to gain weight (both of those are pretty incontrovertible) - and the one you might disagree on is that Messi should lose some of his muscle, so as to become quicker and more agile and prolong his career (plus, the increases to acceleration and agility will surely improve his dribbling, so it's a no-brainer to me).
Maffeo is genuinely a Cannavaro on the right side of the pitch, if you watch him he's actually amazing. Nothing needs to be said about Riqui Puig or any of the other midfielders (they're basically copy+paste of Iniesta, Xavi and Busquets), and the only other position of significance not mentioned is that of Havertz who I think should be Barca's main transfer target. He's rapid (officially the fastest player in the Bundesliga), super mature and intelligent especially given he's 19, and very technical in dribbling, creating and finishing. Screw Dembele, it's pretty clear he isn't ever going to be a Barca great. Let him play with Mbappe.