I agree Black Panther was way overrated, other than Killmonger, the film was pretty bland. BP was a better character in Civil War than he was in his own film.
I think first Avengers is fitting only because it was the first time someone managed to bring together characters and storylines that had previously been directed by others into one film and make it feel natural. It really kicked off the whole thing. Looking back on it now it looks normal, but at the time, that was a huge feat and a huge gamble.
Agreed on Wonder Woman. Didn't like it. How is WW1 Germany basically every single WW2 German stereotype rolled into one?
And I think....
The Dark Knight Rises.