Some people see him improving more -improve how ?- He's not going to start dribbling 4 players in a row, or pulling Ronnie passes.
Even though I am a big, BIG fan of Kylian, his maturity and his consistency; I think there is still room for him to grow in terms of decision-making and finishing....Don't get me wrong, he is already very good for his age, but I think we will see him get even better on these dept's over the next few years....
Additionally, as he matures, he might also get to learn how to distribute his energy wisely throughout the game, rather than being explosive in the beginning and starting to get tired towards the end