I will never tire of repeating how, for me, this version's imagery has never been matched since...
Sleak design, perfect lighting, incredible atmosphere...
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For all the reservation I had and still have about
The Flash, I was always confident that Keaton would once again fit the role very well. And that's regardless of how the character would have evolved. But I really didn't expect him to be so... perfect.
Also, I don't want to compare versions or start debates, but just to share a thought I had: while it's true that Nolan focused a bit more on Bruce Wayne/Batman in his trilogy, I sometimes feel what was really present in Burton's film to be downplaya bit. Even though there's that rather major deviation on the "no kill" code of the character, Keaton's Batman still feels to me like the more complete, even "classic" live action version. To me, the characterization is largely there.
And when it comes to the lore, there wasn't much shyness; the big mansion, the batcave, the gadgets, an almost definitive Batmobile, a batplane, a batboat, etc. Then we saw that Batman fighting gangsters, freaks, and all of that in a visual style that still seems the most "pure" to me. As I said above, things are visually very sophisticated but also straightforward
(something I really miss today).
There was sure some novelty and very personal interpretation brought by Burton and his team, but a fair amount ended up absorbed by the licence in the long run
(industrial and gothic Gotham for example).
Now, this reappearance of the character in The Flash could allows him to check another aspect of his comic book counterpart off his list by fighting meta-humans and other aliens. Sure, we only got a glimpse of it in the trailer, but it seems to me that this Batman, in action, won't be too far from the one we're used to seeing in Justice League stories. The strategic leader of the team, providing some material resources, etc.
Anyway... No matter what this movie ends up being, what a run for Michael Keaton!