I don't really have a fundamental problem with 3-4-3, you CAN play very good and attractive football with it.
Don't have an issue with Conte either, always liked him and he is a character.
Where I disagree with most expextations around here is
1. Pogba and Cristiano are up shit creek as guaranteed starters (I don't care, very much the opposite, it's an upside of having a demanding manager that takes no prisoners)
2. Our midfield pair will remain fundamentally flawed (upside is, we would focus on sorting that out in January, which is long overdue)
3. We need a fantastic RWB, which isn't Dalot or a converted Lingard (in fairness, we could do with such a player today).
4. Bruno may become a bit of a misfit (not terrible)
5. My BIG issue: Greenwood becomes a complete misfit. I haven't been as excited about anyone since Rooney/Ron 15 years ago. That to me is a massive gamble. Sancho I think may adapt better, but not Mason.
Edi will slot in like a glove until Summer, but come Summer we absolutely 100% need Haaland. None of the other forwards we have suit the Costa/Lukaku role (or, basically, Drogba in Mourinho speak).
If we are to write off Greenwood we'd better be more committed to this than an 18 months trial of sorts.