Give the PSG team time, they will definitely be more stable and strong. Although strong as a team, their performance has not impressed me.
Result is the final thing and title is the one you will be remembered in history if you get it. In early matches, PSG did not need Neymar, Mbappe and Veratti to win in Ligue 1 and they can do the same in the future.
They only need time to combine those players and prepare for Champions League. They won't get trouble to win Ligue 1 in my opinion.
Messi-Neymar-Mbappe is one of the best players of this era. My expectation was that the PSG team would attack the opponent a lot and break the opponent’s defense. We have not seen anything like that yet. The coach should talk to the players, find out where the players are having problems. And to strengthen the bonds between the players.
The trouble those players can cause for PSG is they don't proactively support the defense system. It is acceptable if one player has privilege to be free from defense. However, if there are three players in a team, it would be a big trouble. Pochettino have to work with them and change the tactic to fix it. Champions League will be the one to verify the defense system and tactic of PSG with three purely attacking players.