One thing I love about this team is that you'll barely find a weak spot because everybody carry out their role perfectly thereby making it tough for opponents to find a weak link that's why several big teams they've encountered have find it difficult to score them. Yeah era's come and go but this is their era and they're enjoying it to the fullest and would be remembered in the history book as a team who trashed several big teams with many goals and didn't concede against any.
That is why Louis Enrique didn't ask for a "superstar" but someone that is a good player. Kvara, that's all they got to replace Mbappe basically, expensive transfer, and even he is not a superstar or something, he was just slumming it at Napoli, being like 9th or something previous year.
So believe me when I say this, PSG isn't looking for a Mbappe level superstar, even when he went away, they realized, instead of that, they could have 11 players who are all good and all trust each other and all play together. That way they would be doing much better and getting greater results. If they keep this up, and nobody gets spoiled or any ego wars between players, then I bet you that they can stay as good as they want for as long as they want.