The Superman movie in my head is sort of like this:
Metropolis doesn’t exactly look like a real city. It’s fairly heavy art deco, and somewhat retro-futuristic. It galls me a bit that Tim Burton in 1989 has still made the best superhero city. Filmmakers today just shrug and they’re like “let’s use Chicago or Pittsburgh, or go for tax breaks in Albuquerque or London”. Nope. I’d love to see a city that feels real yet fantastic at the same time, showcasing the best of mankind, in a sense.
I want to see Superman perform incredible feats, the kind of thing we’ve never seen before. If he’s fighting Braniac on top of a burning building with 35 people in it, I want to see him rescue all 35 people while beating Braniac.
That said, I’d still want Lex the villain, but he’s always felt a little off in the movies. Eisenberg has been the closest, but he plays it too young and a bit too eccentric. Spacey was too sociopathic; Hackman too goofy. The brilliant narcissist who thinks he’s a huge philanthropist that should be adored is the classic portrayal, which has stood the test of time well; let’s not make into a used-car salesman, a psychopath, or weird legacy kid.
I want to see no overt religious allegory. It’s now fairly tired, in comics and on screen. If you want allegory, go with Superman as a stand-in for the classic American immigrant experience. It’s very timely (not just to America), and imo the most affecting allegory.
Superman is in a lot of ways the only hero whose motive is purely to help people. In some ways that is what makes him unique, and what pisses off his enemies. I’d love to see a superhero movie where that is the hero’s motive, and have it visually look like nothing we’ve seen before. Dump the Marvel, Nolan, Snyder, and Singer playbooks entirely and start anew.
This is all stuff that is not reinventing the wheel.