I have a lot of love in my heart for the Harry Potter books. I really loved the first four novels. Goblet of Fire IMHO was a bit long, but the storytelling was still very good and tightly focused. However in the last three books, I felt JK Rowling was so successful, that she pushed past the practical need for an editor. The last three novels lacked much of the tight controlled focus that the earlier books had in spades. I felt it hurt the story overall and eventually the films.
Now people can disagree or agree on that, but my general concern with Nolan is that he's been so successful, for so long, with big blockbusters, that there are no more external guardrails that might have reigned in his possible not so great instincts in his earlier works. The clear audio problems is a troubling sign. I've met very few people that could discern the dialogue clearly on first viewing of Tenet. But maybe that's just too small a sample size overall.
M. Night Shamalyan could write his own ticket in Hollywood for a while. Then he made a film where Marky Mark was running from the invisible wind that might kill the entire human race. Full creative control is like a bomb. You might explode what you need to blow up. Or you might also incinerate yourself too.
But here's hoping Oppenheimer is great. And if this does well, maybe this opens up more leading man roles for Cillian Murphy, who I find to be a really damn good actor.
But for me seeing the respective actors portraying superheroes makes me see them ONLY as the superheroes they portray and find it a bit jarring watching them in other movies. 
