T'Challa has a trump card. They just have to use it in the films.
Thats the 10 steps ahead version of T'Challa.
Obviously needs his Winter Soldier, Blade, Book of Eli, etc etc moment as well. That badass fight scene in his own film that people keep talking about.
However, show T'Challa having plans on top of plans on top of plans and that will captivate an audience.
Another great thing about strategic T'Challa is that it meshes well with the ensemble excellence of the film(s). There's so many great characters that you could really see how T'Challa moves pieces on the chess board.