Good post.
As far as who can be the new t'challa I'd go with Franklin from snowfall (damson idris, had to Google him real quick)
Best show on televesion
And yes,this seemed like the obvious choice. Checked most of the boxes I could think of. Hes one hell of an actor. Can be dramatic or give you comedic. Could bring some intensity to Tchalla that I felt Chadwick lacked. Hes actually African(yes wakanda is fictional but come on). And liked enough by females they may have given a pass for replacing Shuri lol.
But honestly im looking at BP2 as a tribute and nothing more. For all we know this could be the final Black Panther. And they will just wait to reboot it as apart of an entirely different universe. I really believe they are going to get these last movies off. Then start over for everything with X-men. And you will get new versions of characters lik3 Iron Man,Cap,Hulk in the Xmen universe. Thats what makes the most sense at least. They might just introduce the next Black Panther to us through Storm