In fact, every character’s wants and needs are clearly defined, with one exception: T’Challa’s. When the film opens, he wants to be king. Ten minutes and one ceremonial duel with rival tribe-leader M’Baku (Winston Duke) later, he’s king. After that, he wants to maintain the status quo: Preserve the Wakandan way of life. But the status quo, by definition, is static, and stasis isn’t drama. His romance with Nakia never exceeds nascence; by the time the film ends, you might’ve forgotten they had ever been “a thing.” For too much of Black Panther, the Black Panther has everything he wants.
On top of this, he also is almost entirely devoid of flaws. He’s a deadly martial artist, a stalwart friend, well-educated, even-tempered, quick to smile, and, despite all that, he’s humble. Flaws are the grooves, the nocks that add depth. Perfection in fiction, unlike in life, can be boring. I mean, even Indiana Jones was afraid of snakes.