PSG winning the champions League is a clear indication that they are a better team now than when they had the likes of the players you already mentioned. No more individual football like before and the team is no longer struggling to in matches like before where they defended so much on a particular player to score goals before they could win matches infact right now the coach has balanced the performance of the team and they now play more of team football that's why they could face big teams and get good results.
PSG has always been a good team, their only problem were their attackers. They have always had a balanced defence and midfield, their attackers then were selfish and were not willing to cooperate. I think with PSG current squad they can compete with any big team for any title and if they maintain their performance they can defend the champions league again or make it to the final this coming season.