Continuing a conversation in the Lucasfilm’s future thread
Dom, I disagree that Endgame is made of fan service. Granted there is a fair number, in particular, the plan to win sorta makes fan service to the past impossible. Nevertheless, look at what happens to the characters (names removed to avoid spoilers).

–Hawkeye goes on a murderous rampage, breaking their morals to try to cope with loss. They do this for an extended period and exit the movie happy but also with sins they hadn’t had before.
–Thor sinks into some serious depression which takes a huge toll on them emotionally and physically. Where before this hero was the most “heroic” in Infinity War, but in Endgame they must entirely restart their hero’s journey.
–Thanos, who has been seriously hyped up, is anticlimactically killed off in favor of a more compelling plot.
–Iron Man, whom we may expect will get a “rise from nothing” character arc (that was surprisingly given to #2) becomes finally happy after the opening act. This is the sort of thing you would expect their character to end on… but instead, that character leaves their happy family to do the right thing and dies. They had everything and they lost it to save the world.

Granted two of the six avengers manage to get the happy ending they deserved and one gets to have a glorious moment out. But the other three and our purple friend are intentionally broken and rebuilt for the movie. But the fans still enjoyed the movie- suggesting “subverting expectations” can be done in a way that both surprises and pleases the fans. As I am sure many who enjoyed TLJ already knew.