Yes, perhaps the pressure is on the shoulders of two young strikers, Vinicius and Rodrygo when senior Benzema has gone to the Saudi Professional League to play. In this match, they have to face the great rival Barcelona. Barcelona, this season, is too comprehensive. I rate them higher than Real Madrid. As you say: "If they successfully recruit Mbappe this summer," it will be great to see the trio of Vinicius, Rodrygo, and Mbappe play. This will be a new era for Real Madrid.
I am eagerly awaiting Mbappe's contract. It may become the blockbuster contract of this summer. However, that alone isn't sufficient; I believe Real Madrid needs more, like a spiritual leader, a role that Benzema has fulfilled very well in Real Madrid, but Mbappe hasn't exhibited yet.
Karim Benzema was an outright striker through out his stay at Real Madrid and despite the current quality in the attacking line of the club they'll definitely feel the departure of Benzema if the club doesn't find a good replacement for him.
Vinicius Jnr and Rodrygo are two good forward players but none of them can play in the striking role like Benzema was playing for Real Madrid. I know that the Real Madrid coach can be using a formation that'll allow a false 9 usage but that doesn't solve the problem of finding his replacement I think
That's why Real Madrid is aiming for Harry Kane with an 80 million euro offer. I think 80 million euros are quite high for Kane's current form. Nonetheless, his professionalism and exceptional leadership qualities make him a valuable asset for any club he plays for. If Kane and Mbappe can play together, it would be an amazing combination for Real Madrid and a formidable challenge for any club facing them.