So looking at the other top teams, they didnt do that bad. Some people were destroying them, but they were ok. Never looked like they are in danger of losing, but they didnt have much answers to Icelands defending.
I thought Caballero, while experienced, is completely useless. Armani would surely deserve to start if he is as good as people say.
Biglia is another player where i am asking myself why he is starting. He is utter shite, whats he supposed to be good at? Average in every aspect of the game. Paredes was left out of the squad completely. He would be a better fit alongside Mascherano than Biglia.
Di Maria needs benched. Think the Lanzini injury hurt in that aspect, but Pavon looked promising.
Meza was anonymous. The rest did kind of ok.
Their biggest issue is tactic wise. Too narrow and Messi is an issue. If he has the ball, not enough movement. When the others have the ball, they only look to find Messi. Their wide players are also not taking any risks, not enough dribbling and enough courage to create something. If they do something good, they are looking to Messi again instead of playing their natural game. That would help Messi too if they create space for the team and him instead of putting the focus too quick and every time on him. It was easy for Iceland to defend against Argentina, who were coming through the middle and Messi most of the time. If they came out wide, they put the ball either high (Aguero) or looked for Messi on the edge of the box. I think they need to work on more varieties and how to make space for Messi and the rest of their attackers. They will look shaky defensively, they have not the best defenders around, but have a lot of offensive improvement.
Been that way for years, at some times I think having Leo is doing Argentina more harm than good. "They could play better without being obsessed with their 10 creating everything", then I remember what happens when Argentina plays without Messi and that idea is gone.
And beyond that, what everyone already knows, this Argentina is just a downgraded version of the 2014 squad. Cavallero, Salvio, Rojo (CB), Tagliafico, Pavon and Meza are worse than Romero, Zabaleta, Garay, Rojo (LB), Palacio and Lavezzi in 2014. Mascherano, Banega, Biglia, Higuain and Enzo Perez are arguably in a worse form than 4 years ago, and we could even say the same of Messi and Di Maria, who probably won't get to replicate their level in Brazil.
The only plus sides they have are Agüero (never really did well with Argentina, but he was promising vs Iceland), Dybala (way better than any sub Argentina had in 2014, but doesn't seem he'll get much playtime at this rate) and Lo Celso (who we could consider a huge upgrade in what would be Gago in 2014, but doesn't seem like a real choice for the starting 11).
And what you said about Biglia, I read someone said "how could you not play Messi and Dybala because they're too similar, but field Mascherano and Biglia, that's nonsense", and I think he was 100% right. It's almost like having the option to field Maradona, Pelé and 98' Dunga, but choosing to play Pelé, Dunga and Sampaio leaving Maradona on the bench for "tactical reasons".