How can you leave Avengers off that list? While Iron Man was the spark, Avengers was the bonfire to what we are getting now. Say what you want about Whedon, but he absolutely nailed Avengers properly. Imagine if that was a meh movie.
Yeah, I used IW/EG as the culmination/climax to the greatest comic book movie run in history.
Iron Man started it all... Avengers is a result of Iron Man's style, pace and humor. Iron Man truly began the Phase 1-3.
REVISED:
1978 - Superman: The Movie
1989 - Batman
2008 - Iron Man + The Dark Knight
2018-19 - Infinity War/Endgame
Will Spider-Man No Way Home be the spark or ingenuity behind any great change going forward? Or just a fun nostalgia of the moment for old fans?