Don't... Don't even play like that. That would be one of the most bullisht thing they could do. It's already bad enough that they took direct things from T'Challa that he accomplished in comics, to adapt one of his best stories into a side character... For a TV show would be beyond stupid
An Avengers worldwide scope event like Secret Invasion has been downscaled to an espionage piece for Fury and See Wakanda, And Die would be an immediate hit as a story to showcase the Doras (maybe replace the villains or keep them if they want). Unfortunately at this point T'Challa's stories are no longer his stories and once it has been adapted it belongs to whichever character(s) they have at the center of the story being told.
"Dedra Meero is not just a woman in a men’s world, but a fascist in a world of fascists.” - Denise Gough
T'Challa
A.K.A. The Black Panther
King of Wakanda
King of the Dead and The Champion of Bast
Two-Time Time Magazine "Person Of The Year"
Six-Time People Magazine "Sexiest Man Alive"
I don't think they would be dumb enough to do See Wakanda and die small scale, if they do, especially after giving Shuri rivalry with Namor instead of it going to T'Challa, I really don't see how a variant T'Challa will do any good. Unless WF ends with a post credit showing a return of T'Challa, IF he comes back he will be relegated to a side character and his traits will be completely split with Shuri. Her being the "Genius tech warrior Queen" and variant being "The warrior" and T'Challa will forever be shackled to Sharing the mantle with Shuri going forward.