What are you talking about? Tito was arguably the brains behind most of Pep Guardiola's tactical decisions, even Pep admits that. Both Tito and Tata failed in leadership department while Guardiola succeeded. We need a a charismatic leader who can push and motivate players, players who will follow their guru no matter what. Sorry but Valverde not exactly the guru our players will follow and definitely not charismatic.
I won't think Wenger as charismatic but can be motivational leader and philosophical guru that will influence our players positively
Where on earth did Pep say that Tito was the brains behind Barca? Pep created the system, Pep executed it. He was the one who meticulously implanted the tiki taka philosophy in 08/09, he was the first one who thought of moving Messi to false 9 (he doubted it bc of Ibra, but Tito encouraged him). Pep's methods were his, evolved and learned from his mentors in Cruyff and Bielsa. Tito was his closest advisor, the one who Pep discussed things with; however don't make the mistake that it was Tito controlling things all along.
Pep has always been the brains, any stupid media that made Tito out to be the "genius behind the curtains" are wrong. Even now at Bayern, Pep has gotten the system to flow well and made strides tactically (Robben developing as much as he has, Lahm being such a good conversion to DM, etc.).
When Tito started coaching Barca, our pressing dropped drastically. It was no coincidence that the "lesser appreciated" parts of Pep's system were the first to fall after he left, because Tito didn't have a good understanding on how things worked. Our movement became more static and the team stopped pressing, yet they were still able to ride the momentum of our technical football for a while. Isolating Iniesta on the LW was not a good decision yet he stuck with that lineup for a majority of his tenure. If Tito really were the "active tactician" that you're trying to make him out to be, he'd understand that the team needed off the ball tactics just as much as tiki taka itself. Tito doesn't understand tactics, he just knew how to continue the same procedure at Barca because he was Pep's right hand man. Any time a decision of his own was required (in difficult times) he failed. Played the same lineups, deteriorated our tactics, was tactically outclassed in all big games, the list goes on and on.
There was no way that Tito was the brains behind anything. Forget being able to lead, he never understood tactics as coach either.