I have had the same idea for an anthology series, only slightly different. Every season is slightly or completely different.
I thought it would be far more interesting on HBO Max, that certain writers and directors and actors of talent get one season of making a Superman series. Six, Eight or ten episodes, with the stories, and actors of your choice. No conditions outside of not Superman not killing. Take from the past, the comics, the movies, tv, and fresh ideas.
One season, actor X, and a traditional show, or not, with actors of any race or background. Season two, actor Y, and either a similar world, or a completely different Superman world, with different writers directors and so forth. Season 3, the same, and so one.
Get some people with a background, in another season find up and comers, in another, those with an unusual perspective. Some basic guidelines of who Superman is, or should be, but create a different world and perspective, no matter Superman's background.
If the audience understands what is to occur, I think it would be really fun. Every season, or series is different, enjoy the ride. You may like some, not others, may not like all ideas, but could be great fun, and great art.