I personally think that maybe Napoli can do better this time. They haven't been regularly joining the Champions League above all else. Therefore there was some lack of experience. They still did great last season of course. Because they made it to the quarter finals. However they couldn't deal with Milan obstacle despite a big effort.
But this time I will be expecting an even more competitive and aware team. They should be able to develop better strategies against especially the experienced teams of the tournament. When it comes to their group now I can just say it is quite easy for them. We should be watching a tough fight between Napoli and Real Madrid for advancing as the leader.
the group where Napoli was placed after the draw is quite within Napoli's reach, I personally think they could finish second in the group without major problems, Real Madrid are the number one candidate to win the group and are favorites to win the Champions League . However, if Napoli maintains last year's pace, they could do even better and reach the semifinals, but it all depends on the post-group draws