PSG is a big team currently the best in Ligue 1 for years and are financially capable of getting any top players but what they need is a good coach like Pep Guardiola that would build a very strong squad and instill a winning mentality and probably lead them to victory in the Champions league which they're desperately in need of, as for players they brought in good players to replace the departed ones and so far they've been impressive in the Champions league and has to maintain that form to be able to succeed in the tournament.
Mbappe is the most reliable player for the team and is very important for them due to his goal scoring ability and they'll need him to be in form so as to help them try achieve the Champions league this season, but I feel Mbappe might seize to be a player of PSG by next season.
PSG have tried to sign Lionel Messi for two years but can't winning UEFA Champion League tittle, although having good financial and spent for active in window transfer still not guarantee for PSG winning Champion League tittles. In this season, PSG opening Champion League match with good result after winning from Dortmund but I don't think PSG is favorable teams become the winner in this season. Dominance in domestic league only is not enough for PSG how to be compete in Champion League, have possibility with opponent teams when 16th round not facing with big team like Bayern or Real Madrid and has chance for PSG will qualify until semifinal stage.
Last two season, Real Madrid and Bayern Munich are nightmare team made PSG can't qualify to quarter final and have stuck on 16th round phase, seems difference if both teams above not opponent teams for PSG in 16th round.
Being good in the group stage doesn't mean if PSG will able to pass the play off stage easily. I meant some powerful clubs were getting easier run this season like real madrid and barcelona. These clubs already projected to go to the play off stage easily caused by there was no strong competitor on its group. Real madrid and barcelona were dominating its group as well as the other team like bayern, etc. The play off stage will present several challenges for PSG as they face numerous strong clubs. Winning against dortmund was not enough to be a proof if PSG was strong to face the play off stage.
PSG is not yet safe caused by it's still the first match day of UCL. PSG's position can also be back again to the bottom. I think that the same story will repeat for PSG.
I expect nothing from PSG at this moment. The club was even weaker compared to when neymar and messi were there.