None cause the first one was all but marketing and fake news. People truly believing the movie was profitable that made the movie theaters packing with fans are retarded. It is all a publicity stunt, manufactured hype to make the sheep believe CM is the true shit and you should get behind it.
The fact that CM has such a little role and screentime in Endgame shows how little confidence Disney has over the character.
Wasn't the movie a big success? Clearly it isn't all fabricated hype, lies, movie sits bought by disney. The movie was such a legit success Disney forced Marvel to take as much of CM from Endgame as possible.
Captain Wakanda? The only thing fueling that character is social politics and that shit eventually dies off. Remember the movement blacklivesmatter? Yeah, most people don't care about it anymore.
Neither will people care about Captain Wakanda in the near future once they get bored of using it as a token.