My own view on all this, is that many people are looking in the wrong direction.
The phenomenon of Star Wars in 1977 wasn’t because it was the first really decent science fiction film (in terms of special effects) up to that time. The phenomenon of it was due to a lot of factors which were related to that particular moment in America. It arrived at the end of a long spate of horribly depressing films, starting back in the late 1960’s, whose messages were always about how bleak the future always was, and how it’s stupid to try to accomplish anything. Even in the first Rocky movie, remember, the hero LOST THE FIGHT. Depression and failure was the theme of the 70’s, in film, and politics. Then came Star Wars, where the good guys actually WIN.
Essentially, it was The Next Beatles (which was amplified by the Kennedy assassination, and civil rights protests).
What I mean by that is, that all sorts of people are always looking for the “next (whatever),” because they want to re-experience the combination of wonder, visceral pleasure, excitement, and determined hope for the future, that they did during one moment in their youth. From what I’ve seen, the new “thing” is not likely to be in the same genre as the one that knocked you out the first time around. It’s like jokes, in that way.
The New Hot Thing of The Era Sensation only works, when whatever it is surprises you. It never works when you plan it out for yourself.
That means the next “Star Wars” probably wont be a MOVIE of any kind.
We’re getting a good set up for a Next Big Thing, though. The Trump era, with Russia and North Korea and the Middle East all smooshing us into a sense of complete malaise, is the classic hopeless backdrop for some new heroic concept to explode into.