Gasperini would fail here. His teams have no clue how to defend. We might beat Inter 4-0 with him, and lose 3-0 against Sassuolo in the following game.
He also issues with man management. I doubt he’d be able to take on egos like CR7, Bonucci and Dybala when he could barely cope with Papu Gomez.
Finally, at Atalanta, he has no pressure to win trophies so he had all the time in the world to implement his ideas.
His team might defend better with MDL Chiellini and Demiral.
C.Ronaldo - He would bend over to Ronaldo like every other manager..
Bonucci - No problem we can ship him away if thats the problem...
Dybala - I dont think he is problematic at all. Papu is way more of a problematic figure compared to Dybala.
The fact Dybala has been benched so often and he isnt acting like a superstar who must play means Dybala is actually not a problem in that sense.
In terms of coaching style I rather S.Inzaghi to be honest but his team is based on great midfield and Im not sure if our team characteristics fit his style.
The team I enjoyed watching in terms of just pure football was Lazio (last season).
I have never been overly impressed with Atalanta BUT you must admit Gasperini did some serious work there - He went in the CL further than us despite have a much weaker team and a much lower budget.
The main issues about Gasp are defending and consistency just like you said but we have the best defense on paper and we are one of the most consistent teams in Europe.
Im not saying he should be the only option but he would for sure fix our chance creating problem as if he does it for Atalanta he can surely do it for Juve.
In terms of playing style - I like Zidane, Inzaghi, Klopp (although his Liverpool are falling apart this season) - Less tiki taka and more concrete.
This being said, I wouldnt be crying if we get someone like Pep even if he is not my favorite coach.