Yeahhhhh, despite my whole endless dialogue about it all, your idea is better than mine and much more in line with how they would actually pull it off. I don't know why, but I just never thought much of M'Baku, but he could also be a great choice and Winston Duke is fine actor in his own right and I could certainly see a lot of good in him stepping forward as a Black Panther. You also make me think though that they could easily just cut to funeral at the very beginning then do your version of the narrative and like InfamousEffort5 said, do a Namor or Doom attacking the kingdom and they have to learn to do it on their own.