Juventus does not have enough squad depth to play well throughout the season, Motta will not be able to change this without good transfers. And I'm not sure if just one successful season with Bologna is enough to expect him to succeed at Juventus. I think that the days of Juventus' dominance in Serie A are over, a number of mistakes led to them allowing other teams to become champions.
When I check the Juventus squad, I see that Thiago Motta have a lot of work to do if him and the Juventus management wants a better season ahead; they have good striker and some average wingers in the squad that can still be good for the team and can be relied on, but they ok quality midfielders that can feed these strikers and wingers ball to make something good for the team, and if they didn’t sign more players, they will not perform well in the next coming season specially as they have more competitions to play next season.
Juventus must bring in more reliable players, even though currently the players they have already have reliable talent, but look at Juventus' defense this season, it looks very sad.
I agree with you that in the coming season Juventus has a big target to return to its glory days and all of this must be done in accordance with the club's plan which will build a club better prepared to face obstacles in the Champions League and Serie A.
For example, at the start of this season Juventus appeared impressive but lost consistency at the end of the season.
This is an example that consistency must also be maintained to provide success to the club and Thiago Motta's task is to further study what Juventus needs to return to performing with high consistency.