Paris Saint German has proved to the whole world that they are a formidable team and winning the champions league trophy has proven that to all of them. They also need to maintain their dominance in the champions league next season and it is only by that they can be feared by their opponents in the competition. Luis Enrique need to be praised and to be given accolade for how far it came with this team, he has really done well and more is expected from him next season. Maintaining consistency in their performance next season is what is most needed by them as a team so that they don’t lose their dominance and confidence in the team.
Going to the top from the bottom is an easy job, staying at the top and trying to maintain position over there is the hardest. Me, as a person who has watched lots of historical champion's league editions, I won't be surprised if PSG got eliminated from the UCL in the earlier rounds next season.
I don't think what you're saying is very realistic. If they don't face one of the tournament favorites, they will go as high as they can. Because we saw in the World Cup that Paris Saint-Germain is competing very well. Everyone who expected the team to decline after losing Mbappé last year looks at this year with surprise and admiration. Expectations are high for them this year. Since they were Champions League champions last year, their fans want this success to be repeated this year.