I agree with this sentiment. I think our next [major] step to return to being a tier 1 team is to be able to take the game to our biggest opponents; to win possession and midfield battles through time on the ball and forcing the ball to stay in certain zones of the pitch. Whilst our recent wins against Liverpool and Arsenal were admirable, they were short-term plaster wins that long term shouldn't be our main plan of action in these games. Player in the ilk of Pedri are the type of profile this team is massively missing, and what I hope ten Hag starts targeting next.
I'm not super convinced by Bellingham, personally, but that's just an aside. Clearly very talented, but I don't like the idea of a 100m+ valuated midfielder being a jack of all trades. I need some specialism in my teams.