Here's another example, which I talked about in another thread a few days ago, and one of the many small differences between both versions.
In Batman's first appearance in the TC, we see the GCPD car skid up to a building, which the two cops then enter to find the caged girls, branded guy, and Batman.
In the UC, that scene begins with the two cops chilling in the GCPD car eating and watching a Metropolis/Gotham college football game. A call about "screams heard in an abandoned building" comes through, which the cops seem to ignore for a moment. We see couple of moments of the game on their screen and the Gotham players start a brawl with the Metropolis players. When the cops finally answer the call and drive away, the football commentators say “Gotham City, you know how they feel about their football team. Things may get ugly in the city tonight.” The cops drive away and the camera pans out to reveal Gotham City and we see this:
Then, they pull up to the abandonded building as in the TC.
Watching the added bits of this scene out of context would make it seem relatively insignificant. But within the film itself, a scene like this is absolutely crucial for the following reasons:
- MUCH less of an abrupt transition between the previous scene and this one.
- Shows that some Gotham City cops are lazy and don't immediately "jump" to help people or stop crime
- The bits of the football game establish (in 3 seconds time) that Gotham is rougher than Gotham, and that Metropolis and Gotham have a relationship akin to that of San Francisco and Oakland
- Includes an establishing shot of Gotham to clue viewers into the fact that the film has now cut to Gotham City
- The Gotham Seaport sign is shown to be decaying, which conveys the idea that Gotham is more run-down than Metropolis
- Beyond that, the "abandoned building" call and the decaying/defaced billboard clues viewers into the fact that the Gotham Seaport (where the film's later battles take place) is truly abandoned
- Easter Egg of ACE Chemicals shown in the background of that shot
This is a prime example of how not even a minute of extra footage can impact a film from a storytelling and filmmaking perspective. Out of context, it seems like nothing, but when watching the film from the beginning and getting to this part, it not only feels so much more natural but also
essential. And this is less than one minute of additional footage, one of many seemingly tiny changes/additions which all add clarity to the story and its settings, so anyone should be able to imagine how some of the bigger additions or extensions of entire subplots and character moments would impact the over-arching story when integrated properly within the film.
Forget about being a fan of these characters or the BvS TC. As a film buff and former college film major, I can honestly say I was fascinated watching the UC and seeing how much of a difference all of the changes made to the film as a whole.