So, just to start with, thanks for the response, well thought out and did give me something to think about.
I still think it's a little more flexible than you think, e.g. you talk about the back line, well you have VDV, Romero, Danso & Dragusin, you could play 3 atb (Romero would be well suited to the step out role), you could punt VDV to LB, you could swap Danso in if you want more air cover. I'd argue the core of the team is physicality (a lot of physical players, pretty big side overall minus a couple), we should have plenty of running in the team and we should have the stamina for a press (I think the PL is ill suited for permanent press, more mid block with controlled triggers for a high press)
We do lack balance (I agree) and we lack an elite player or system to build around (I think that drives your defining quality issue. Yes Ange would probably enjoy having Kudus/Gallagher/Paulhinha in his squad more than Frank does.
But that goes back to Frank, what is he trying to do? e.g. is he trying to get use of the width (we have wingers/AMs who can play wide), is he trying to build around Xavi? is he trying to press. Really (and if you see something else, I'd be fascinated) it seems his strategy is mid block that transitions to a super deep block under pressure), hump the ball to Kudus, he tries to take on his man, if he can't, back pass to Porro, huge booming cross into box to 1 CF, and my huge worry is that's what we want to do on the left. The video I posted earlier shows basic gaps in coaching, not player skill/capability, positioning, off the ball movement, understanding opposition passing lanes, that's not on the squad, not at this level.
And here's where I really worry, everyone thinks the issue with the team is no passer, yet we have gone out and got a LB, Bentancur goes down, we get a similar profile CM, that tells me two things, not sure Frank is looking for a passer, and the lack of forward passing is a design not flaw, I fundamentally (guess this is back to difference in squad evaluation) don't believe this squad is capable of only 11 progressive passes in 21 games (and Bentancur's passing numbers in previous years to this one as e.g. kind of backs that up).