Well he can be cap like, as long you continue to have good writing on his films and good characters for him to bounce off of. Him and Shuri's scenes were actually >>>> Cap and Falcon's scenes tbh but that was mostly off the strength of Shuri admittedly. Spiderman would have to be the one to bring the Stark level charisma.
Yea, I mentioned this in the BP 2 thread: Chris Evans is great but people overrate MCU Cap's [initial] charisma tbh and they let the character slide in part bc he's "captain
america". It was really CA:TWS that really won people over with him, and even then he didn't have the type of A1 supporting cast that BP did. Instead he had Falcon pretty much taking L's to make Steve look good ["on your left!" or "im just a weaker slower version of Steve!] And in CA:CW, he was arguably the least interesting character in his own film but it was 'ok' b/c it was avengers 2.5, and he's captain
america."
T'Challa is of the same mode as far as laid back, even keel mr. nobility. So ironically him and Shuri's dynamic plays out the exact same way Steve and Tony's did, where Steve was the "leader" but Tony had the crowd always laughing. But as time went, we saw how the writing was able to propel Steve to where he is now as the face/heart of the Avengers. T'Challa will go through a similar process