With the advancement of AI and digital rendering, I think it would be interesting to see movies that have random endings. Wonder if the main hero will die? Now his/her fate isn’t written in stone.
To take it a step further, maybe movie stories could be impacted by viewers. Imagine watching a movie and pressing a selection on a phone app for say “Lighter” or “Darker”. Enough people press “Lighter” and the movie goes in a happy direction, enough press “Darker”, well you see where that’s going.