But as Star Trek VI: The Undiscovered Country had done in the past, the original six Avengers all saw their autographs commemorated on screen, as if putting their final signature on the characters they helped bring to life.
By time Avengers: Endgame said its final goodbyes to the Avengers that either fell in the line of duty or retired, the MCU found itself on the same sort of path that Star Trek before it had.
With Phase 4 still officially unannounced and the future unknown, the landmark cinematic franchise is now at a crossroads as to how it should proceed.