Every team is preparing for next season. There have been many changes across all teams, and we can already see some strengths, even if they are still subtle.
I agree that Napoli is currently very strong and is still the favorite to defend their Scudetto title next season.
This contrasts sharply with Inter Milan. After their change of coach, many doubted that Inter Milan could improve next season, and I think that's perfectly understandable.
Several other teams are also worth considering, such as Juventus, Roma, and several other top Serie A teams.
I agree about Inter, I think that with Inzaghi's departure everything will change in the team, Roma and Juventus also did not work very well in the transfer market to expect from them a much better game than they did last season. Maybe I hope that Milan can become better, I always liked how Alegre works, but I am not rushing to conclusions yet, I want to see how they start this season. And Napoli will most likely be able to dominate, because they have everything in order on all lines.