Originally Posted by
chief12d
Like with most things nowadays it depends on the MCU. The comics stopped being the driving force for these characters years ago. If T'Challa isn't recast and Shuri or M'Baku take the throne in the movies T'Challa very likely gets phased out at least for a few years to build up a catalog of stories for his replacement. So if anything Boseman's tragic passing could be the justification Marvel needed to deemphasize T'Challa in the comics.
But if there is a recast and the films become even more successful I could definitely see T'Challa getting a proportional push in the comics. But at that point you need to consider if the push will be good. After the success of the debut in 2016 and in the wake of his solo film, Marvel pushed out several Black Panther mini series, but with the exception of Rise of the Black Panther and Killmonger (I think) sales were insanely weak. The Crew, World of Wakanda, Shuri, those crossovers with the X-Men and Spider-Man didn't do particularly well.
Though some, like World of Wakanda, overperformed in trades and digital, at least initially. A lot of it has to do with the so-so quality of these books or the overly political content that made them dead on arrival (namely the Crew and World of Wakanda). But with the main BP scribe about to get off the book, I think there'll be a less controversial direction going forward.
Best case scenario, T'Challa is recast and Black Panther 2 does as good if not better than the first film financially. Meaning we continue to get stuff like T'Challa leading the Avengers and being central to events like Empyre (quality notwithstanding). Worst case is Shuri or Killmonger take the role, the film underperforms, and T'Challa goes the way of Ant-Man, relegated to minis and team books with little in the way of in-universe relevance.