About technical aspect, Motta need to find his alternative formation/tactics. He can't rely on just one.
The first formation/tactic i assume is the one againts Milan in our home. It's not perfected yet but it's worth the shot. This aggressive tactic need players that good at counterpress like Nico, Koop, Thuram, Locatelli. We should build a team around them including of course our star boy Yildiz and the man of the hour Kolo Muani.
unfortunately, this approach is too energy consuming. We can't play same players, game in game out, every 3 or 4 days. He could play this at Bologna last year that barely have midweek game. But with european commitment and thight schedule this season, it's difficult.
Thats why he need to find the alternative. We can build a team around the players like Luiz, Conceicao, Dusan, and alberto costa to give the others a break to get to their best condition again.
We have a squad of 24 players if we exclude milik, cabal, and bremer. Even with Adzic and rouhi that not yet at serie A level, i think we should be ready to manage rotation and game management better.
Regarding mental aspect, honestly i doubt that we will improve in this aspect. With Motta and his man management, i haven't see a hungrier Juve in players eyes. I don't think it will improve instanly. No leader in team only will make it worse