PSG still have players like Ashraf Hakimi Dembele so they have no reason to worry about the local league, they will still be champions in the local league tournament. PSG will also have a huge points gap with their nearest rivals.
With the way PSG have performed in their first two games in the French League, I think they may have forgotten that Mbappe is no longer in their team. Because in the first two matches we saw PSG score a lot of goals and win two matches by big margins. But the most important thing is that the next season does not look good for PSG in the Champions League because PSG does not currently have the kind of players that a team needs to do well in the Champions League.
PSG will not have difficulty in pursuing domestic titles because there are still many players who can be relied on and are more qualified than other clubs.
I agree with you that over time, PSG will forget Mbappe in league 1 but will always be brought up when appearing in the champions league.
Maybe we are too early to judge whether PSG can perform like last season in the UCL because the new regulations in the UCL give opportunities to other clubs that are not favored and all of that is because popular clubs in the UCL will be busier and tired of having a tighter schedule.
If Enrique can take this opportunity, PSG can perform well in the champions league this season.
Luis Enrique is a very capable manager and has experience of leading big teams before so he will make the decisions that are best for PSG but my current PSG team looks like this team is unlikely to do well in the Champions League next season at least. If you look at the Champions League performances last season, you can clearly see Mbappe's contribution. Due to the contribution of Mbappe, PSG was able to play the semi-finals last season, but this season, including Mbappe, some other important players are not in PSG, so it will be difficult for them to overcome the barrier of the Super Sixteen in the next season.
PSG had the opportunity to sign Victor Osimhen but they did not show much interest in signing this player, PSG's attacking line-up would be much stronger if PSG could complete the deal.