I understand not wanting to see a pointless sequel, I just don’t get how the original three Indiana Jones films tell some kind of story that was concluded and never needed to be revisited.
It’s not that all three create some sort of big story. It’s that TLC ended in a way that leads the character to a grand sendoff. It was the emotional culmination of the series. So yeah, he never needed to be revisited again.
It’s like if after Star Trek VI, after all the signatures on the screen and everything, they just made another movie with the original cast, and not only that, but what if it was embarrassingly bad-- Oh… wait.
It’s not really like that. STVI in a lot of ways was about aging and one last hoorah. Other than riding into the sunset (one scene), there’s nothing like that in TLC. Sulu and Scotty also returned in later ST series and only a couple cast members were in Generations. It certainly wasn’t a movie with the original cast. I’m also not necessarily convinced that a Spielberg interview twenty years after the film came out is definitive proof that TLC was meant to be Indiana Jones’ swan song the way Star Trek VI obviously was for the original cast of Star Trek.