No I mean I do like them I just think someone like Dr Strange for example is pretty similar to Tony Stark, and Spidey himself could be given a bit more dramatic weight. As far as T'Challa is concerned I thought he was the worst part of Black Panther, he just didn't have the charm he had in Civil War, he was pretty bland and kept mumbling. Don't know about Captain Marvel, didn't watch the movie.
Galactus eh... You think we'll get F4 with Disney acquiring Fox? I think it's better not to have a movie involving the 4 characters and keep them as side characters, to me they are like the Hulk, they can't carry their own movie but they can do well as supporting characters. After all they tried to do 3 mainstream movies and all of them sucked(the 2005 one is at best cheesy and entertaining).