I see DC taking a two lane approach, especially with the billion dollar successes of AQUAMAN and JOKER. In one lane will be movies that more or less exist in the same universe, but not necessarily connected; in the other lane will be movies that have little or no connection to any universe. So WB can do an imaginary Superman story right now, with any actor in the part, while still holding out the hope of a definitive Superman in the future. Actually I think that's the best approach, because too often universe-building Superman movies try too hard to do something controversial to get attention. I don't think the public wants that from a traditional Superman movie, but they will go along with it in a movie that's clearly not trying to tell a definitive story.