I don't think there is a better coach than Luis Enrique in coaching this club, previous coaches relied on star players but not with this coach he is not too ambitious to recruit other star players to replace Mbappe I think Luis Enrique is trying a new scheme without star players and seeing how the existing squad is able to give the best performance for the team and now it is proven that the entire PSG squad works well together and the chemistry between the coach and the players is getting better.
I also see this in PSG now, PSG is better without star players because in the last few matches PSG has always won big. It can be said that PSG without Mbappe plays more freely, more collectively, so their game is compact. In the squad if there is a player who is too favored and has a very high salary with other players, it will not be good for team cohesion and Enrique is aware of that. Enrique is indeed the type of coach who prefers team cohesion rather than relying on individuals, very different from previous coaches, this was also seen when Mbappe was still at PSG, he did not rely too much on one player.
It is difficult to break PSG's dominance if other clubs do not have good resources like PSG especially in terms of experienced players and coaches, even though other clubs try hard to make it difficult for PSG but PSG still appears solid because this club has mastered how the game works in League 1 for years.
It is undeniable that PSG League 1 will always dominate because as you said they have all the advantages compared to other teams in League 1, both in terms of resources and coaches. But they will always have difficulty when playing against teams outside League 1 such as the UCL league. This season will be a challenge for Enrique, can he bring PSG to the best level in the UCL league without many star players?