No idea how the roster will look in 4 years, Mbappe will be 27 in his prime but this was Lloris, Benzema and Giroud last WC. Griezmann will be 35, Varane and Pogba will be 33
I guess we'll see which guys will emerge. Tchouameni is also only 22 y/o... Dembele is 25, Having a huge difference like Mbappe is certainly an advantage
Guys like Messi, Ronaldo, Lewandowski, Modric will most likely not be there in the next WC, Neymar will be 34, Harry Kane will be 33, De Bruyne will be 35... Mbappe should have less competition
Problem is they nowhere near had their A team today and in the tournament in general. Even Griezmann was struggling today. Benzema and Pogba not playing during the WC definitely hurt their chances