I would also look forward to something like that. It will seriously put emphasis on Varane physicality though so lets hope, Maguire will still be in good form for the inevitable breaks Varane will need. For me personally, I think, this lineup might be not physical enough for the PL but you are certainly right, the trends are moving towards technical players over physical ones.Hopefully it won't be long before we see a first phase of the players below. And then ten Hag will look to play through the thirds imo or else I'm going to be worried.
To exert control in possession in the build up phase you need players who are comfortable playing under pressure. Casemiro isn't that player hence at Real Madrid, he would at times be pushed up with Kroos and Modric dropping deeper to act as the first receivers in the build up phase. And when the ball was progressed forward, Modric and Kroos would take up more advanced roles in midfield with Casemiro the holding midfielder. The EPL is stronger than La Liga right now and it requires players who can evade, resist and shield the ball against teams who defend aggressively from the front. McTominay, Casemiro and to a lesser extent Eriksen are not good in that regard.
So it seems like ten Hag is instructing the team to play a lot more direct than how he wants them to play. Which doesn't play to the strengths of Onana and Amrabat. Amrabat because he's someone who can receive the ball on the half turn against the press and progress the play from a deeper lying role and we aren't playing through the midfield. I personally think that is due to who is playing at CB currently and the lack of ability those players have in confined spaces. Mourinho once said that he himself was very good when it came to passing the ball around but he couldn't pass the well when under pressure. So in that scenario it's better to go direct than cause yourself even bigger problems by asking players to do something that puts them out of their comfort zone.
When we're talking about Kobbie Mainoo, we're talking about potential. A young midfielder with the potential to evade, resist and shield the ball against the opponent's high pressure tactics. And that is potential that McTominay never showed at youth level and Casemiro was never that type of player to begin with. So it's on ten Hag to decide if he feels Mainoo is good enough to contribute in the team and everything points towards ten Hag believing in the ability of Mainoo. He's a coach with a history of selecting young players only if he believes they can contribute towards the collective.
Casemiro obviously has experience and has been a great player in his time. But if ten Hag wants to implement his methods then he needs players in possession in the first phase who can play under pressure. And every single player in the first phase needs to be very good against the opponent's press if we're to exert control in possesion and progress the play effectively.
The quicker I see the team below the better. I think in possesion there's potential here that can develop over the course of the season which can then be improved further in the transfer window.
You control the middle field by having elite players in possession and not just having good midfielders.
-----------‐‐-----------Onana---
Dalot-----Varane-----Martinez-----Shaw
--------------Mainoo----Amrabat---
Lets hope, Mainoo will be eased in on a regular basis. I think, him flourishing in PL from the get-go like Greenwood would mean we got very "lucky" two times in a row.