I think people re way too much into Nakias comment about Okoye being the greatest warrior in Wakanda (when T'Challa was assumed dead) when it's not even clear of she is because there is M'Baku as well. Okoye takes out what.
8 goons on the casino and car chase scene total and 1 trafficker? So 9 people throughout the entire movie.
While T'Challa took out the score of traffickers, free falling and destroys their vehicles with a masterful throwing of emp beads.. at night. Then 4 vehicle's including klaws as well as the guys in the casino, M'Baku, scores of border tribe forces, a rhino, a two dragonflyers and Erik solo.. and somehow that translates to Okoye being as good or a better fighter then T'Challa?

Okoye didn't face and defeat Killmonger, and when she had the opportunity to engage him? She AND THE DORA MILAJE faced him down...losing one of their own in the process. T'Challa faced multiple warriors of The Border Tribe, mecharhinos, and also killed KM in h2h. T'Challa is the greatest warrior in Wakanda. Period.
Also? I believe that Disney recasts T'Challa. I don't believe they won't recast T'Challa. If I were in their shoes? I'd definitely say that I wouldn't recast T'Challa NOW, because the scars and wounds of losing Chadwick, Kobe, and too many others [ including the wave of violence perpetrated against us by Whites like the death of Ahmaud Arberry, Floyd, Breonna, etc ] is way too fresh and horrific.
I would fall back on Marvel's tradition of secrecy, let time pass, and recast Chadwick with Denzel's son. Especially because: Letitia can't carry a movie like BP 2. She lacks the physical and mental strength to do so. Lupita Nyongo...Nakia...also lacks the physical athleticism and the character bio to take over for the BP franchise. Danai Gurira...Okoye, Michonne...can't carry the whole movie either., although she's far more able to do so than either Letitia or Lupita. It doesn't make sense for her character ...Okoye...to seek the throne. Idk if Marvel goes with Wright etc in BP 2 as the star but I doubt it. Very seriously.
I doubt KM comes into play, too. Resurrecting him DOES follow the comic canon but it ALSO ABSOLUTELY CRUSHES THE BEST AND MOST IMPACTFUL SINGLE SCENE IN ANY MARVEL HERO MOVIE except for maybe. Maybe. Iron Man's sacrifice of his life at the end of The Infinity Saga.
All roads seem to lead to bringing in JDW as Black Panther...maybe from the "Multiverse of Madness" we'll see in Doctor Strange. But all of this is very very difficult to swallow. The death of the great. Yes, the GREAT. Chadwick Bpseman before the arc of T'Challa could be entrusted to another actor is a gargantuan blow to the BP saga.
But I have a solution.
Bring in JDW not as T'Challa but as T'Challa's son from The Multiverse. Explanation? In BP 2, Shuri lets it be known that T'Challa wasn't brought back to Wakanda when everyone else was returned from The Snap. She used her unsurpassed genius to track clues of T'Challa throughout The Multiverse. Turns out? T'Challa was brought back to a MULTIVERSAL DIMENSION WAKANDA and lived his entire life in this new Wakanda, and had a child...
Perfect opportunity for Nick Fury and Old Man Cap to cameo and..in talks with Shuri and/or Ramonda... shed light on T'Challa's character from their perspectives. Cap would say that the man he saw run with The Infinity Gauntlet and toss it to Spider-Man? Would leave a trail across the multiverse itself for his loved ones to follow. Nick Fury? Could say that Captain Marvel told him that she found traces of Vibranium in the bodies of Kree and Skrulls but they somehow or other tracked both to Wakanda AND gave off a weird multiversal energy signature even for Vibranium. This? Would be the Vibranium that T'Challa Junior used to repel the Skrulls who invaded HIS Earth in the SECRET INVASION style we saw in the comics. And? Let Shuri be the one who finds JDW's character via her adventures in BP 2. At the end of BP 2? She finds him. She says: "...T'Challa.."" and JDW turns around and says in Xhosa: "Yes, I am T'Challa. Hello, auntie." Or something much better than that.
BP 3? Tracks T'Challa JUNIOR through his trials and challenges as he does his walkabout etc and becomes the NEW Black Panther. Hell, he might further reconcile differing canons by combining aspects of ULTIMATE Black Panther with our beloved 616 BP. We need way more examples of BP's speed, agility, acrobatics, stealth, hunting prowess,etc. And we need to see him do better
Hell. If Florence Pugh can just up and take the mantle of Black Panther from Natasha after Natasha's character death? Then JDW can reinvigorate BP and T'Challa using the path that I suggested. And in that way? Marvel and Disney can LITERALLY keep their word. They DIDN'T recast T'CHALLA. They have T'Challa JUNIOR. And this gives them? The opportunity to flesh out the profile of BP more. Who's his BIRTH mother [ probably the Oroo/Storm of his dimension ]. What's T'Challa's LAST NAME? What SPECIFICALLY are his POWERS? Etc. etc.