5 years is a long time, and players lost motivation, became frustrated with roles, and regressed last year. Happens to the best.
A complete change of style and gameplay helps renew motivations and gives a new challenge.
Dybala, Sandro, Bonucci are the main ones with big improvements over poor form last year. Pjanic too, if he gets back to his early season form of this year (he’s been quite poor since his little injury). Bentancur is improving by leaps and bounds, but that’s kind of to be expected of a high potential young one as he edges towards his prime. Costa was never fit for more than a couple matches last year, so hard to say with him. He’s not reached his 17-18 heights because of injury. Higgy playing similar to 17-18, and Ronaldo playing similar level now to last year. Bernadeschi has fallen off a cliff.
Anyways, happiest about Dybala, because we needed his return to form most of all.