Originally Posted by
XPac
No one aside from M'Baku bothered challenging T'Challa, so it's entirely possibly Shuri wouldn't even have to fight anyone for the title. Which would be funny if that were the case, since she didn't actually need to fight in the challenge to win the mantle in the comics either.
Again though, if we're talking End Game I don't think it would even matter if she were the official Black Panther or not. They're not going to send some random Wakandan warrior into space with the Avengers.