It’s pure pie in the sky stuff for me. Admittedly I think I just want to feel the feeling of “HOLY SH** FOURTH NOLAN BATMAN” announced, and the unthinkable levels of hype that would occur, the trailers, etc. I know it’s shallow, but just on a pure pop culture level that would be unreal to experience. I also think Nolan has only become stronger as a filmmaker post-Batman, so I’d just to see what he could do with it now.
But yeah, story-wise, it’s hard to imagine a version that doesn’t totally undo the trilogy’s ending. I do suspect Chris is 100% done with it. He’s said as much. But maybe Jonah can revisit the character in another way some day. Seeing has he’s really really gone deep into the sci-fi space, I would love his take on a Batman Beyond type of story.