I mean with Dembele, Neves, Ramos, Muani, and even with Emery who is getting better, I would say PSG offensive line is still quite strong. Doesn't mean anything will change, but at least there is no expectation for them to get better, it's just not looking all that possible. I personally believe that we are going to see them do just fine and with this much money spent on the players it doesn't make sense for them to do just fine.
Let's see how far they will go in UCL, that part is something I wonder a lot. With some luck on which teams they will play, they may actually go very far, but if they get unlucky then they may not do all that well neither, so that's all a great situation which would be a little bit of a trouble on the long term.
This is why I think it's quite easy to say that PSG has a season that will decide on a lot of things ahead, because this season will be first without Mbappe and based on how they do, they will have the future set out for them. If they do fine, then they will think that they are on the right path and just go do that, but if they end up bad then they will realize they need to change something and do something about that, all of it depends on this season.
With the squad that PSG currently has, it is only enough to win the Ligue 1 trophy and other domestic trophies. Meanwhile, to go further in the Champions League or win it, PSG must first find a replacement for Mbappe, because it greatly affects their bargaining value there. Everyone is curious about what will happen after Mbappe leaves, last season PSG managed to reach the semifinals, without Mbappe it seems they will find it difficult to repeat it. So far no agreement has been reached with players who have been linked like Osimhen, while Ligue 1 will soon roll.
On the other hand, I agree that PSG must change some of its policies that have been considered the best way to achieve success in the future, replacing star players with star players does not guarantee a step closer to winning trophies. PSG must learn to be like Bayern Munchen, who came from a League that was not so competitive but was able to win trophies in the Champions League. Almost every season Bayern Munchen is included in the list of favorite teams to win, this can be realized because they build a team collectively that does not depend on one or two star players.