PSG will not get stronger if there are still weak lines in their team, because last season it was clear that PSG would not be successful in the UCL when they only relied on their front line, while the other lines were still not strong enough. So that is still the main task of PSG if they want to make their team stronger this season, because defense is a very important line for all teams. And this season everything is also clear where PSG was only able to draw in the first two matches in Ligue1.
So far, PSG have not fully made a better transition for other lines and they are only too focused on attack positions. So they have to balance many lines in order to meet the club's needs. Now PSG are still unable to get good results with the depth of the squad they have updated this season, moreover, for matters of defense there must be significant improvements as much as possible. But midfield is also important because it will be more creative when there are several experienced players in this position. PSG's new recruits this season are actually good, it's just that maybe it takes more time so they can have a more equal impact on the club.