I agree with you that big name is just a name. If the bonding between the players in the squad is not good, there is no experienced coach, then even if all the players in the squad are star players, it is not possible to get good performance from this squad. And PSG club can be seen as an example of this. PSG had the best players in the world. But even then this team failed to play well in the Champions League. But this season's scenario is completely different.
This season we see that there is no big star player in PSG's squad. Even PSG lost a player as talented as Mbappe. However, we have not seen any deterioration in PSG's performance. Rather, we see a better performance from PSG this season.
However, PSG's performance has stabilized with the help of Luis Enrique. The bonding between the players is very strong now. PSG's match strategy is also excellent. So PSG has a chance to perform well in Champions League this season.
The big name of a player actually has an effect but it also depends on the quality and time, as happened to the PSG team a few seasons ago when they brought in several star players whose quality had declined, so in my opinion it is the same as not being able to improve a team's performance.
So far we have not seen the impact without Mbappe in the PSg team because they have not encountered any obstacles now, maybe in my opinion PSG's true quality can only be seen when they compete in the Champion League competition because in Ligue 1 there is no team comparable to PSG.
Luis Enrique is a pretty good coach, so I think the progress that Luis Enrique is making is going in a positive direction so we just have to wait for the time for PSG to be much more developed and stronger.