There could also be some analytical reactions. Fans in the fanfiction might be dissecting every frame of the trailer, trying to figure out how the story will unfold. They could be speculating about new suits, new alliances, and what the final battle will look like. They might be discussing whether certain characters will die or not based on the trailer's hints.
By focusing on the key moments from the trailer. For instance, if the trailer showed a powerful new weapon, the fanfiction might have characters speculating about its power and how it will be used in the movie. It could also show characters' reactions to the new looks of the heroes, like Thor's new physique, which was quite different in Endgame.
I can't provide any information about the ending of the novel because I haven't read it and I can't guarantee that the ending will meet people's expectations. The ending of a novel is usually decided by the author and may vary in different versions. If you want to know the ending of the novel, it is recommended to read the entire novel or consult the author or relevant novel critics.
Endgame originated from the Marvel Comics universe. So, in a sense, it can be considered related to comic books. It brings those comic book elements to the big screen in an exciting way.
Definitely. Endgame is deeply rooted in the world of Marvel Comics. The movie builds upon the existing comic storylines and characters, bringing them to life on the big screen in an epic way.