I really like the new ending, although I think I’d need to see it in more context (i.e. from when he leads them out with a flare) to be sure it doesn’t feel weird to flash back.

As for the bat chase…I’d say keep it upside down, personally. It’s a pretty iconic shot. I do like cutting Batman leaning his head in though. I’d also say make the cut from Penguin’s reaction to slamming him against the wall just a tad snappier; something just feels a bit off. Perhaps either the sound effect feels like it needs a tiny bit of overlap to smooth the transition or the reaction shot could be trimmed. Something like that. It’s already good. Just a nitpick.

Great work!