So because we have a historical data that shows that for the past 30+ years only one team did it once, I doubt PSG will be able to replicate that, and most likely it would be like the other 90%+ of the finals where they will not win. Lets see if we are right or not, but it is obvious that we are going to see these things change, and maybe it would make more sense for them to get a better result.
Yes, I agree with your opinion, as we can see PSG's efforts to see if the club has made significant changes this season. However, I don't think Luis Enrique has made many changes, retaining the previous players and not recruiting new, more talented players.
I assume the existing players are experienced, but there's still a risk of injury because the existing players will certainly play harder in the Champions League.
Meanwhile, there are clubs from other leagues that have made many changes and recruited new, talented players, such as Barcelona, Bayern Munich, and several other popular clubs that managed to beat PSG before reaching the final.