The sad part is Messi, would benefit the most of a new set of core players behind him.
A new Midfield trio who are mobile and strong on the ball+Mobile FW, Pacey wingers. Sure they won't be as good as some of the guy's Messi ever played with such as Xavi, Iniesta, Prime Busi, Prime Suarez, Eto, etc but they don't need to be.
Messi clearly was devasted after the Anfield disaster as he really wanted the CL. But let's get real here, If he really wants to win the CL again, he needs to use his position to demand changes and stop letting deep friendships with certain players influence things.
He's the GOAT and the god damn captain of this team, He can easily put the likes of Alba, Rakitic, Suarez, Pique, Busi, etc in line if he has to as there's no way they will go against him. Sure they are his friends and played alongside each other for years now, but if he wants to win the CL again he needs to realize that these guys are no longer the same set of players they were(Bar Alba) as they declined and no longer have the same motivations as they once were.
I don't give a shit if Valverde is a hands-off approach guy if he's not the right guy to lead us in the right direction then he needs to go. We won't win the CL with these same old core players starting the majority of the games, Leo can pull off various heroics to get us to the QF/SF but it would end up being meaningless if we go out due to poor coaching and the old core players not being good enough anymore to get us to the title.